actually the spontaneous logouts (or X crashes?) are still there without kde... may not be the culprit.

It often happens overnight, ie I wake up to the logout screen. Which means it's not triggered by user interaction. I suspected the xfce4-power-manager, which is running, but I've seen this crash happen many times with me in front of the computer, so it's not happening when comp. is iddle for X minutes only.

I suspect the X system now. looks like a X crash.

 # cat /var/log/dmesg 
37] pci 0000:00:1f.2: no compatible bridge window for [mem 0xff970000-0xff9707ff]
[    2.067066] Expanded resource reserved due to conflict with PCI Bus 0000:00
[    2.067068] Expanded resource reserved due to conflict with PCI Bus 0000:00
[    2.067070] reserve RAM buffer: 000000000009e400 - 000000000009ffff 
[    2.067072] reserve RAM buffer: 00000000bfdff800 - 00000000bfffffff 
[    2.067083] NetLabel: Initializing
[    2.067083] NetLabel:  domain hash size = 128
[    2.067083] NetLabel:  protocols = UNLABELED CIPSOv4
[    2.067083] NetLabel:  unlabeled traffic allowed by default
[    2.067083] HPET: 4 timers in total, 0 timers will be used for per-cpu timer
[    2.067083] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0
[    2.067083] hpet0: 4 comparators, 64-bit 14.318180 MHz counter
[    2.070016] Switching to clocksource tsc
[    2.072014] pnp: PnP ACPI init
[    2.072021] ACPI: bus type pnp registered
[    2.083649] pnp 00:01: disabling [io  0x0800-0x085f] because it overlaps 0000:00:1f.0 BAR 13 [io  0x0800-0x087f]
[    2.083652] pnp 00:01: disabling [io  0x0860-0x08ff] because it overlaps 0000:00:1f.0 BAR 13 [io  0x0800-0x087f]
[    2.119892] pnp: PnP ACPI: found 9 devices
[    2.119894] ACPI: ACPI bus type pnp unregistered
[    2.119900] system 00:01: [io  0x0c00-0x0c7f] has been reserved
[    2.124604] pci 0000:00:1c.0: BAR 15: assigned [mem 0xf0000000-0xf01fffff 64bit pref]
[    2.124606] pci 0000:00:1c.0: BAR 13: assigned [io  0x1000-0x1fff]
[    2.124609] pci 0000:00:1f.2: BAR 5: assigned [mem 0xf0200000-0xf02007ff]
[    2.124612] pci 0000:00:1f.2: BAR 5: set to [mem 0xf0200000-0xf02007ff] (PCI address [0xf0200000-0xf02007ff]
[    2.124615] pci 0000:00:03.0: BAR 0: assigned [mem 0xf0200800-0xf020080f 64bit]
[    2.124619] pci 0000:00:03.0: BAR 0: set to [mem 0xf0200800-0xf020080f 64bit] (PCI address [0xf0200800-0xf020080f]
[    2.124621] pci 0000:00:01.0: PCI bridge to [bus 01-01]
[    2.124623] pci 0000:00:01.0:   bridge window [io  0xd000-0xdfff]
[    2.124626] pci 0000:00:01.0:   bridge window [mem 0xfa000000-0xfeafffff]
[    2.124628] pci 0000:00:01.0:   bridge window [mem 0xd0000000-0xdfffffff 64bit pref]
[    2.124631] pci 0000:00:1c.0: PCI bridge to [bus 02-02]
[    2.124633] pci 0000:00:1c.0:   bridge window [io  0x1000-0x1fff]
[    2.124637] pci 0000:00:1c.0:   bridge window [mem 0xf9f00000-0xf9ffffff]
[    2.124640] pci 0000:00:1c.0:   bridge window [mem 0xf0000000-0xf01fffff 64bit pref]
[    2.124645] pci 0000:00:1e.0: PCI bridge to [bus 03-03]
[    2.124647] pci 0000:00:1e.0:   bridge window [io  0xc000-0xcfff]
[    2.124650] pci 0000:00:1e.0:   bridge window [mem disabled]
[    2.124653] pci 0000:00:1e.0:   bridge window [mem pref disabled]
[    2.124661]   alloc irq_desc for 16 on node -1
[    2.124662]   alloc kstat_irqs on node -1
[    2.124666] pci 0000:00:01.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    2.124669] pci 0000:00:01.0: setting latency timer to 64
[    2.124675] pci 0000:00:1c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    2.124678] pci 0000:00:1c.0: setting latency timer to 64
[    2.124682] pci 0000:00:1e.0: setting latency timer to 64
[    2.124685] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7]
[    2.124686] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff]
[    2.124688] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff]
[    2.124690] pci_bus 0000:00: resource 7 [mem 0x000c0000-0x000effff]
[    2.124691] pci_bus 0000:00: resource 8 [mem 0x000f0000-0x000fffff]
[    2.124693] pci_bus 0000:00: resource 9 [mem 0xf0000000-0xfec00000]
[    2.124695] pci_bus 0000:00: resource 10 [mem 0xbff00000-0xdfffffff]
[    2.124697] pci_bus 0000:00: resource 11 [mem 0xff980800-0xff980bff]
[    2.124698] pci_bus 0000:00: resource 12 [mem 0xff97c000-0xff97ffff]
[    2.124700] pci_bus 0000:00: resource 13 [mem 0xfed20000-0xfed9ffff]
[    2.124702] pci_bus 0000:00: resource 14 [mem 0xfedad800-0xfedadfff]
[    2.124703] pci_bus 0000:01: resource 0 [io  0xd000-0xdfff]
[    2.124705] pci_bus 0000:01: resource 1 [mem 0xfa000000-0xfeafffff]
[    2.124707] pci_bus 0000:01: resource 2 [mem 0xd0000000-0xdfffffff 64bit pref]
[    2.124709] pci_bus 0000:02: resource 0 [io  0x1000-0x1fff]
[    2.124710] pci_bus 0000:02: resource 1 [mem 0xf9f00000-0xf9ffffff]
[    2.124712] pci_bus 0000:02: resource 2 [mem 0xf0000000-0xf01fffff 64bit pref]
[    2.124714] pci_bus 0000:03: resource 0 [io  0xc000-0xcfff]
[    2.124715] pci_bus 0000:03: resource 4 [io  0x0000-0x0cf7]
[    2.124717] pci_bus 0000:03: resource 5 [io  0x0d00-0xffff]
[    2.124719] pci_bus 0000:03: resource 6 [mem 0x000a0000-0x000bffff]
[    2.124720] pci_bus 0000:03: resource 7 [mem 0x000c0000-0x000effff]
[    2.124722] pci_bus 0000:03: resource 8 [mem 0x000f0000-0x000fffff]
[    2.124724] pci_bus 0000:03: resource 9 [mem 0xf0000000-0xfec00000]
[    2.124725] pci_bus 0000:03: resource 10 [mem 0xbff00000-0xdfffffff]
[    2.124727] pci_bus 0000:03: resource 11 [mem 0xff980800-0xff980bff]
[    2.124729] pci_bus 0000:03: resource 12 [mem 0xff97c000-0xff97ffff]
[    2.124731] pci_bus 0000:03: resource 13 [mem 0xfed20000-0xfed9ffff]
[    2.124732] pci_bus 0000:03: resource 14 [mem 0xfedad800-0xfedadfff]
[    2.124747] NET: Registered protocol family 2
[    2.125030] IP route cache hash table entries: 524288 (order: 10, 4194304 bytes)
[    2.126162] TCP established hash table entries: 524288 (order: 11, 8388608 bytes)
[    2.129536] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[    2.129977] TCP: Hash tables configured (established 524288 bind 65536)
[    2.129979] TCP reno registered
[    2.129999] UDP hash table entries: 8192 (order: 6, 262144 bytes)
[    2.130141] UDP-Lite hash table entries: 8192 (order: 6, 262144 bytes)
[    2.130364] NET: Registered protocol family 1
[    2.130444] RPC: Registered udp transport module.
[    2.130446] RPC: Registered tcp transport module.
[    2.130447] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    2.130587] pci 0000:01:00.0: Boot video device
[    2.130592] PCI: CLS 64 bytes, default 64
[    2.130632] Trying to unpack rootfs image as initramfs...
[    2.214926] Freeing initrd memory: 8016k freed
[    2.217206] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    2.217210] Placing 64MB software IO TLB between ffff8800021db000 - ffff8800061db000
[    2.217212] software IO TLB at phys 0x21db000 - 0x61db000
[    2.217359] Simple Boot Flag at 0x7a set to 0x80
[    2.218094] audit: initializing netlink socket (disabled)
[    2.218109] type=2000 audit(1298328312.217:1): initialized
[    2.218966] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    2.220922] VFS: Disk quotas dquot_6.5.2
[    2.220976] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    2.221505] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    2.222258] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[    2.222732] NTFS driver 2.1.29 [Flags: R/W].
[    2.222856] ROMFS MTD (C) 2007 Red Hat, Inc.
[    2.222927] QNX4 filesystem 0.2.3 registered.
[    2.222957] fuse init (API version 7.15)
[    2.223174] JFS: nTxBlock = 8192, nTxLock = 65536
[    2.225978] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
[    2.226545] SGI XFS Quota Management subsystem
[    2.226766] Btrfs loaded
[    2.226915] aufs 2.1-standalone.tree-36-UNRELEASED-20101027
[    2.226920] msgmni has been set to 31899
[    2.227166] async_tx: api initialized (async)
[    2.227200] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    2.227203] io scheduler noop registered
[    2.227204] io scheduler deadline registered
[    2.227252] io scheduler cfq registered (default)
[    2.246496] Linux agpgart interface v0.103
[    2.246734] vesafb: framebuffer at 0xfb000000, mapped to 0xffffc90012c00000, using 1536k, total 1536k
[    2.246736] vesafb: mode is 1024x768x16, linelength=2048, pages=0
[    2.246737] vesafb: scrolling: redraw
[    2.246739] vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
[    2.256516] Console: switching to colour frame buffer device 128x48
[    2.319806] fbcondecor: console 0 using theme 'sabayon'
[    2.364370] fbcondecor: switched decor state to 'on' on console 0
[    2.364876] fb0: VESA VGA frame buffer device
[    2.364930] intel_idle: MWAIT substates: 0x22220
[    2.364932] intel_idle: does not run on family 6 model 23
[    2.365073] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0
[    2.365078] ACPI: Power Button [VBTN]
[    2.365132] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input1
[    2.365134] ACPI: Power Button [PWRF]
[    2.365186] ACPI: acpi_idle registered with cpuidle
[    2.449923] ERST: Table is not found!
[    2.449926] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    2.714118] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    2.735046] 00:07: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    2.735134]   alloc irq_desc for 17 on node -1
[    2.735136]   alloc kstat_irqs on node -1
[    2.735142] serial 0000:00:03.3: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    2.755337] 0000:00:03.3: ttyS1 at I/O 0xec98 (irq = 17) is a 16550A
[    2.755483] Floppy drive(s): fd0 is 1.44M
[    5.766025] floppy0: no floppy controllers found
[    5.767337] brd: module loaded
[    5.767930] loop: module loaded
[    5.767931] Compaq SMART2 Driver (v 2.6.0)
[    5.767975] HP CISS Driver (v 3.6.26)
[    5.768185] MM: desc_per_page = 128
[    5.768319] Loading iSCSI transport class v2.0-870.
[    5.768601] fnic: Cisco FCoE HBA Driver, ver 1.4.0.145
[    5.768786] Loading Adaptec I2O RAID: Version 2.4 Build 5go
[    5.768788] Detecting Adaptec I2O RAID controllers...
[    5.768875] Adaptec aacraid driver 1.1-5[26400]-ms
[    5.768957] aic94xx: Adaptec aic94xx SAS/SATA driver version 1.0.3 loaded
[    5.769105] QLogic Fibre Channel HBA Driver: 8.03.04-k0
[    5.769167] iscsi: registered transport (qla4xxx)
[    5.769196] QLogic iSCSI HBA Driver
[    5.769197] Emulex LightPulse Fibre Channel SCSI driver 8.3.16
[    5.769198] Copyright(c) 2004-2009 Emulex.  All rights reserved.
[    5.769328] DC390: clustering now enabled by default. If you get problems load
[    5.769330]        with "disable_clustering=1" and report to maintainers
[    5.769382] megaraid cmm: 2.20.2.7 (Release Date: Sun Jul 16 00:01:03 EST 2006)
[    5.769416] megaraid: 2.20.5.1 (Release Date: Thu Nov 16 15:32:35 EST 2006)
[    5.769440] megasas: 00.00.04.17.1-rc1 Thu. Oct. 29, 11:41:51 PST 2009
[    5.769473] mpt2sas version 06.100.00.00 loaded
[    5.769556] GDT-HA: Storage RAID Controller Driver. Version: 3.05
[    5.769629] 3ware Storage Controller device driver for Linux v1.26.02.003.
[    5.769654] 3ware 9000 Storage Controller device driver for Linux v2.26.02.014.
[    5.769680] LSI 3ware SAS/SATA-RAID Controller device driver for Linux v3.26.02.000.
[    5.769706] ipr: IBM Power RAID SCSI Device Driver version: 2.5.0 (February 11, 2010)
[    5.769734] RocketRAID 3xxx/4xxx Controller driver v1.6 (090910)
[    5.769758] stex: Promise SuperTrak EX Driver version: 4.6.0000.4
[    5.769810] cxgb3i: tag itt 0x1fff, 13 bits, age 0xf, 4 bits.
[    5.769836] iscsi: registered transport (cxgb3i)
[    5.769840] Broadcom NetXtreme II iSCSI Driver bnx2i v2.1.2 (Jun 28, 2010)
[    5.769865] iscsi: registered transport (bnx2i)
[    5.769868] VMware PVSCSI driver - version 1.0.1.0-k
[    5.769894] st: Version 20081215, fixed bufsize 32768, s/g segs 256
[    5.769935] osst :I: Tape driver with OnStream support version 0.99.4
[    5.769936] osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $
[    5.770101] ahci 0000:00:1f.2: version 3.0
[    5.770111]   alloc irq_desc for 18 on node -1
[    5.770112]   alloc kstat_irqs on node -1
[    5.770116] ahci 0000:00:1f.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    5.770142]   alloc irq_desc for 40 on node -1
[    5.770143]   alloc kstat_irqs on node -1
[    5.770149] ahci 0000:00:1f.2: irq 40 for MSI/MSI-X
[    5.770200] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 6 ports 3 Gbps 0x27 impl SATA mode
[    5.770203] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pmp pio slum part ccc ems sxs 
[    5.770206] ahci 0000:00:1f.2: setting latency timer to 64
[    5.776072] scsi0 : ahci
[    5.776198] scsi1 : ahci
[    5.776269] scsi2 : ahci
[    5.776339] scsi3 : ahci
[    5.776407] scsi4 : ahci
[    5.776474] scsi5 : ahci
[    5.777937] ata1: SATA max UDMA/133 abar m2048@0xf0200000 port 0xf0200100 irq 40
[    5.777940] ata2: SATA max UDMA/133 abar m2048@0xf0200000 port 0xf0200180 irq 40
[    5.777942] ata3: SATA max UDMA/133 abar m2048@0xf0200000 port 0xf0200200 irq 40
[    5.777944] ata4: DUMMY
[    5.777944] ata5: DUMMY
[    5.777946] ata6: SATA max UDMA/133 abar m2048@0xf0200000 port 0xf0200380 irq 40
[    5.779334] pata_acpi 0000:00:03.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    5.779350] pata_acpi 0000:00:03.2: setting latency timer to 64
[    5.779357] pata_acpi 0000:00:03.2: PCI INT C disabled
[    5.779567] Fixed MDIO Bus: probed
[    5.779617] cnic: Broadcom NetXtreme II CNIC Driver cnic v2.1.3 (June 24, 2010)
[    5.779648] I2O subsystem v1.325
[    5.779650] i2o: max drivers = 8
[    5.779729] I2O Configuration OSM v1.323
[    5.779784] I2O Bus Adapter OSM v1.317
[    5.779804] I2O Block Device OSM v1.325
[    5.779887] I2O SCSI Peripheral OSM v1.316
[    5.779907] I2O ProcFS OSM v1.316
[    5.779928] Fusion MPT base driver 3.04.17
[    5.779929] Copyright (c) 1999-2008 LSI Corporation
[    5.779933] Fusion MPT SPI Host driver 3.04.17
[    5.779958] Fusion MPT FC Host driver 3.04.17
[    5.779985] Fusion MPT SAS Host driver 3.04.17
[    5.780016] Fusion MPT misc device (ioctl) driver 3.04.17
[    5.780053] mptctl: Registered with Fusion MPT base driver
[    5.780054] mptctl: /dev/mptctl @ (major,minor=10,220)
[    5.780056] Fusion MPT LAN driver 3.04.17
[    5.780107] usbmon: debugfs is not available
[    5.780108] Initializing USB Mass Storage driver...
[    5.780132] usbcore: registered new interface driver usb-storage
[    5.780134] USB Mass Storage support registered.
[    5.780157] usbcore: registered new interface driver libusual
[    5.780178] usbcore: registered new interface driver ums-alauda
[    5.780200] usbcore: registered new interface driver ums-cypress
[    5.780224] usbcore: registered new interface driver ums-datafab
[    5.780245] usbcore: registered new interface driver ums-freecom
[    5.780266] usbcore: registered new interface driver ums-isd200
[    5.780289] usbcore: registered new interface driver ums-jumpshot
[    5.780310] usbcore: registered new interface driver ums-karma
[    5.780331] usbcore: registered new interface driver ums-onetouch
[    5.780355] usbcore: registered new interface driver ums-sddr09
[    5.780377] usbcore: registered new interface driver ums-sddr55
[    5.780399] usbcore: registered new interface driver ums-usbat
[    5.780488] PNP: No PS/2 controller found. Probing ports directly.
[    5.783179] serio: i8042 KBD port at 0x60,0x64 irq 1
[    5.783183] serio: i8042 AUX port at 0x60,0x64 irq 12
[    5.783313] mice: PS/2 mouse device common for all mice
[    5.783592] rtc_cmos 00:05: RTC can wake from S4
[    5.783636] rtc_cmos 00:05: rtc core: registered rtc_cmos as rtc0
[    5.783656] rtc0: alarms up to one day, 242 bytes nvram, hpet irqs
[    5.783676] md: linear personality registered for level -1
[    5.783678] md: raid0 personality registered for level 0
[    5.783679] md: raid1 personality registered for level 1
[    5.783681] md: raid10 personality registered for level 10
[    5.783682] md: raid6 personality registered for level 6
[    5.783683] md: raid5 personality registered for level 5
[    5.783685] md: raid4 personality registered for level 4
[    5.783686] md: multipath personality registered for level -4
[    5.783688] md: faulty personality registered for level -5
[    5.783809] device-mapper: ioctl: 4.18.0-ioctl (2010-06-29) initialised: dm-devel@redhat.com
[    5.783949] cpuidle: using governor ladder
[    5.783950] cpuidle: using governor menu
[    5.784023] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.2)
[    5.784653] usbcore: registered new interface driver hiddev
[    5.784678] usbcore: registered new interface driver usbhid
[    5.784679] usbhid: USB HID core driver
[    5.784785] TCP bic registered
[    5.784788] NET: Registered protocol family 17
[    5.784822] Registering the dns_resolver key type
[    5.785235] TuxOnIce 3.2-rc2 (http://tuxonice.net)
[    6.082025] ata3: SATA link down (SStatus 4 SControl 300)
[    6.083010] ata6: SATA link down (SStatus 0 SControl 300)
[    6.237041] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    6.237044] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    6.246444] ata2.00: ATAPI: PBDS CD-RW/DVD-ROM DH-48C2S, ND12, max UDMA/100
[    6.256209] ata2.00: configured for UDMA/100
[    6.265808] ata1.00: ATA-8: ST31500341AS, CC1H, max UDMA/133
[    6.265811] ata1.00: 2930277168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[    6.307864] ata1.00: configured for UDMA/133
[    6.318100] scsi 0:0:0:0: Direct-Access     ATA      ST31500341AS     CC1H PQ: 0 ANSI: 5
[    6.318251] sd 0:0:0:0: [sda] 2930277168 512-byte logical blocks: (1.50 TB/1.36 TiB)
[    6.318287] sd 0:0:0:0: [sda] Write Protect is off
[    6.318289] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    6.318301] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    6.318304] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    6.319460] scsi 1:0:0:0: CD-ROM            PBDS     CDRWDVD DH-48C2S ND12 PQ: 0 ANSI: 5
[    6.325446] sr0: scsi3-mmc drive: 0x/48x writer cd/rw xa/form2 cdda tray
[    6.325449] cdrom: Uniform CD-ROM driver Revision: 3.20
[    6.325564] sr 1:0:0:0: Attached scsi CD-ROM sr0
[    6.325643] sr 1:0:0:0: Attached scsi generic sg1 type 5
[    6.413650]  sda: sda1 sda2 < sda5 sda6 sda7 sda8 sda9 >
[    6.414058] sd 0:0:0:0: [sda] Attached SCSI disk
[    6.501399] TuxOnIce: No image found.
[    6.501990] registered taskstats version 1
[    6.502241] rtc_cmos 00:05: setting system clock to 2011-02-21 22:45:17 UTC (1298328317)
[    6.502294] Freeing unused kernel memory: 604k freed
[    6.803958] scsi6 : pata_legacy
[    6.804133] ata7: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
[    6.955367] scsi7 : pata_legacy
[    6.955521] ata8: PATA max PIO4 cmd 0x170 ctl 0x376 irq 15
[    7.191540] scsi: <fdomain> Detection failed (no card)
[    7.228377] imm: Version 2.05 (for Linux 2.4.0)
[    7.277811] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    7.277835]   alloc irq_desc for 22 on node -1
[    7.277837]   alloc kstat_irqs on node -1
[    7.277843] ehci_hcd 0000:00:1a.7: PCI INT C -> GSI 22 (level, low) -> IRQ 22
[    7.277864] ehci_hcd 0000:00:1a.7: setting latency timer to 64
[    7.277867] ehci_hcd 0000:00:1a.7: EHCI Host Controller
[    7.277880] ehci_hcd 0000:00:1a.7: new USB bus registered, assigned bus number 1
[    7.277905] ehci_hcd 0000:00:1a.7: debug port 1
[    7.281772] ehci_hcd 0000:00:1a.7: cache line size of 64 is not supported
[    7.281785] ehci_hcd 0000:00:1a.7: irq 22, io mem 0xfebddc00
[    7.291006] ehci_hcd 0000:00:1a.7: USB 2.0 started, EHCI 1.00
[    7.291038] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    7.291041] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.291044] usb usb1: Product: EHCI Host Controller
[    7.291046] usb usb1: Manufacturer: Linux 2.6.36-sabayon ehci_hcd
[    7.291048] usb usb1: SerialNumber: 0000:00:1a.7
[    7.291238] hub 1-0:1.0: USB hub found
[    7.291242] hub 1-0:1.0: 6 ports detected
[    7.291368]   alloc irq_desc for 23 on node -1
[    7.291369]   alloc kstat_irqs on node -1
[    7.291373] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    7.291380] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[    7.291383] ehci_hcd 0000:00:1d.7: EHCI Host Controller
[    7.291388] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 2
[    7.291407] ehci_hcd 0000:00:1d.7: debug port 1
[    7.295292] ehci_hcd 0000:00:1d.7: cache line size of 64 is not supported
[    7.295302] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xff980800
[    7.305007] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[    7.305022] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[    7.305025] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.305027] usb usb2: Product: EHCI Host Controller
[    7.305029] usb usb2: Manufacturer: Linux 2.6.36-sabayon ehci_hcd
[    7.305032] usb usb2: SerialNumber: 0000:00:1d.7
[    7.305184] hub 2-0:1.0: USB hub found
[    7.305187] hub 2-0:1.0: 6 ports detected
[    7.321239] uhci_hcd: USB Universal Host Controller Interface driver
[    7.321338] uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    7.321343] uhci_hcd 0000:00:1a.0: setting latency timer to 64
[    7.321345] uhci_hcd 0000:00:1a.0: UHCI Host Controller
[    7.321352] uhci_hcd 0000:00:1a.0: new USB bus registered, assigned bus number 3
[    7.321379] uhci_hcd 0000:00:1a.0: irq 16, io base 0x0000ff20
[    7.321405] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[    7.321407] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.321409] usb usb3: Product: UHCI Host Controller
[    7.321410] usb usb3: Manufacturer: Linux 2.6.36-sabayon uhci_hcd
[    7.321412] usb usb3: SerialNumber: 0000:00:1a.0
[    7.321629] hub 3-0:1.0: USB hub found
[    7.321633] hub 3-0:1.0: 2 ports detected
[    7.321714] uhci_hcd 0000:00:1a.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    7.321718] uhci_hcd 0000:00:1a.1: setting latency timer to 64
[    7.321720] uhci_hcd 0000:00:1a.1: UHCI Host Controller
[    7.321725] uhci_hcd 0000:00:1a.1: new USB bus registered, assigned bus number 4
[    7.321750] uhci_hcd 0000:00:1a.1: irq 17, io base 0x0000ff00
[    7.321774] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[    7.321776] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.321778] usb usb4: Product: UHCI Host Controller
[    7.321779] usb usb4: Manufacturer: Linux 2.6.36-sabayon uhci_hcd
[    7.321780] usb usb4: SerialNumber: 0000:00:1a.1
[    7.321933] hub 4-0:1.0: USB hub found
[    7.321936] hub 4-0:1.0: 2 ports detected
[    7.322088] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    7.322092] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[    7.322094] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[    7.322099] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 5
[    7.322119] uhci_hcd 0000:00:1d.0: irq 23, io base 0x0000ff80
[    7.322144] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001
[    7.322146] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.322147] usb usb5: Product: UHCI Host Controller
[    7.322149] usb usb5: Manufacturer: Linux 2.6.36-sabayon uhci_hcd
[    7.322150] usb usb5: SerialNumber: 0000:00:1d.0
[    7.322360] hub 5-0:1.0: USB hub found
[    7.322363] hub 5-0:1.0: 2 ports detected
[    7.322442] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    7.322446] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[    7.322449] uhci_hcd 0000:00:1d.1: UHCI Host Controller
[    7.322454] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 6
[    7.322472] uhci_hcd 0000:00:1d.1: irq 17, io base 0x0000ff60
[    7.322496] usb usb6: New USB device found, idVendor=1d6b, idProduct=0001
[    7.322497] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.322499] usb usb6: Product: UHCI Host Controller
[    7.322500] usb usb6: Manufacturer: Linux 2.6.36-sabayon uhci_hcd
[    7.322502] usb usb6: SerialNumber: 0000:00:1d.1
[    7.322716] hub 6-0:1.0: USB hub found
[    7.322719] hub 6-0:1.0: 2 ports detected
[    7.322798] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    7.322802] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[    7.322805] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[    7.322809] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 7
[    7.322834] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000ff40
[    7.322860] usb usb7: New USB device found, idVendor=1d6b, idProduct=0001
[    7.322862] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.322863] usb usb7: Product: UHCI Host Controller
[    7.322865] usb usb7: Manufacturer: Linux 2.6.36-sabayon uhci_hcd
[    7.322867] usb usb7: SerialNumber: 0000:00:1d.2
[    7.323080] hub 7-0:1.0: USB hub found
[    7.323083] hub 7-0:1.0: 2 ports detected
[    7.335519] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    7.348650] sl811: driver sl811-hcd, 19 May 2005
[    7.397712] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k6-NAPI
[    7.397714] e1000: Copyright (c) 1999-2006 Intel Corporation.
[    7.429098] iscsi: registered transport (tcp)
[    7.644019] usb 2-2: new high speed USB device using ehci_hcd and address 2
[    7.818634] usb 2-2: New USB device found, idVendor=0644, idProduct=0200
[    7.818637] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    7.818639] usb 2-2: Product: CA-200
[    7.818641] usb 2-2: Manufacturer: TEAC
[    7.818643] usb 2-2: SerialNumber: 000002047A55
[    7.818955] scsi8 : usb-storage 2-2:1.0
[    8.076013] usb 3-1: new low speed USB device using uhci_hcd and address 2
[    8.230450] usb 3-1: New USB device found, idVendor=192f, idProduct=0416
[    8.230454] usb 3-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[    8.230456] usb 3-1: Product: USB Optical Mouse
[    8.248679] input: USB Optical Mouse as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1:1.0/input/input2
[    8.248945] generic-usb 0003:192F:0416.0001: input,hidraw0: USB HID v1.11 Mouse [USB Optical Mouse] on usb-0000:00:1a.0-1/input0
[    8.455007] usb 6-1: new low speed USB device using uhci_hcd and address 2
[    8.619560] usb 6-1: New USB device found, idVendor=0e8f, idProduct=0020
[    8.619564] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    8.619566] usb 6-1: Product: PS2toUSB Adapter
[    8.619568] usb 6-1: Manufacturer: GASIA
[    8.636781] input: GASIA PS2toUSB Adapter as /devices/pci0000:00/0000:00:1d.1/usb6/6-1/6-1:1.0/input/input3
[    8.636910] generic-usb 0003:0E8F:0020.0002: input,hidraw1: USB HID v1.10 Keyboard [GASIA PS2toUSB Adapter] on usb-0000:00:1d.1-1/input0
[    8.675567] generic-usb: probe of 0003:0E8F:0020.0003 failed with error -71
[    8.704034] usb 6-1: USB disconnect, address 2
[    8.829452] scsi 8:0:0:0: Direct-Access     TEAC     USB   HS-CF Card 4.08 PQ: 0 ANSI: 0
[    8.833195] scsi 8:0:0:1: Direct-Access     TEAC     USB   HS-xD/SM   4.08 PQ: 0 ANSI: 0
[    8.836698] scsi 8:0:0:2: Direct-Access     TEAC     USB   HS-MS Card 4.08 PQ: 0 ANSI: 0
[    8.839946] scsi 8:0:0:3: Direct-Access     TEAC     USB   HS-SD Card 4.08 PQ: 0 ANSI: 0
[    8.840546] sd 8:0:0:0: Attached scsi generic sg2 type 0
[    8.841013] sd 8:0:0:1: Attached scsi generic sg3 type 0
[    8.841551] sd 8:0:0:2: Attached scsi generic sg4 type 0
[    8.842000] sd 8:0:0:3: Attached scsi generic sg5 type 0
[    8.858061] sd 8:0:0:1: [sdc] Attached SCSI removable disk
[    8.866686] sd 8:0:0:0: [sdb] Attached SCSI removable disk
[    8.871186] sd 8:0:0:2: [sdd] Attached SCSI removable disk
[    8.875312] sd 8:0:0:3: [sde] Attached SCSI removable disk
[   13.195011] usb 6-1: new low speed USB device using uhci_hcd and address 3
[   13.359053] usb 6-1: New USB device found, idVendor=0e8f, idProduct=0020
[   13.359056] usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[   13.359059] usb 6-1: Product: PS2toUSB Adapter
[   13.359061] usb 6-1: Manufacturer: GASIA
[   13.376260] input: GASIA PS2toUSB Adapter as /devices/pci0000:00/0000:00:1d.1/usb6/6-1/6-1:1.0/input/input4
[   13.376389] generic-usb 0003:0E8F:0020.0004: input,hidraw1: USB HID v1.10 Keyboard [GASIA PS2toUSB Adapter] on usb-0000:00:1d.1-1/input0
[   13.402396] input: GASIA PS2toUSB Adapter as /devices/pci0000:00/0000:00:1d.1/usb6/6-1/6-1:1.1/input/input5
[   13.402648] generic-usb 0003:0E8F:0020.0005: input,hidraw2: USB HID v1.10 Mouse [GASIA PS2toUSB Adapter] on usb-0000:00:1d.1-1/input1
[   28.758354] TuxOnIce: No image found.
[   28.766144] EXT3-fs (sda9): error: couldn't mount because of unsupported optional features (240)
[   28.766434] EXT2-fs (sda9): error: couldn't mount because of unsupported optional features (240)
[   28.833517] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)
[   33.225230] udev: starting version 154
[   33.225260] udevd (5003): /proc/5003/oom_adj is deprecated, please use /proc/5003/oom_score_adj instead.
[   33.624978] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[   33.625782] parport_pc 00:06: reported by Plug and Play ACPI
[   33.625830] parport0: PC-style at 0x378 (0x778), irq 7, using FIFO [PCSPP,TRISTATE,COMPAT,ECP]
[   33.858517] ppdev: user-space parallel port driver
[   33.908271] input: PC Speaker as /devices/platform/pcspkr/input/input6
[   33.934458] i801_smbus 0000:00:1f.3: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[   33.962048] iTCO_vendor_support: vendor-support=0
[   33.979938] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.06
[   33.980022] iTCO_wdt: unable to reset NO_REBOOT flag, platform may have disabled it
[   34.092187] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[   34.251032] Error: Driver 'pcspkr' is already registered, aborting...
[   34.252255] e1000e: Intel(R) PRO/1000 Network Driver - 1.2.7-k2
[   34.252257] e1000e: Copyright (c) 1999 - 2010 Intel Corporation.
[   34.252293]   alloc irq_desc for 21 on node -1
[   34.252295]   alloc kstat_irqs on node -1
[   34.252301] e1000e 0000:00:19.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21
[   34.252308] e1000e 0000:00:19.0: setting latency timer to 64
[   34.252381]   alloc irq_desc for 41 on node -1
[   34.252382]   alloc kstat_irqs on node -1
[   34.252389] e1000e 0000:00:19.0: irq 41 for MSI/MSI-X
[   34.504042] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:21:9b:72:5b:10
[   34.504045] e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
[   34.504066] e1000e 0000:00:19.0: eth0: MAC: 7, PHY: 6, PBA No: 1051ff-0ff
[   34.537127] AV200 0000:03:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   34.772643] nvidia: module license 'NVIDIA' taints kernel.
[   34.772645] Disabling lock debugging due to kernel taint
[   35.352453] nvidia 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   35.352460] nvidia 0000:01:00.0: setting latency timer to 64
[   35.352464] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=io+mem
[   35.352619] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  260.19.29  Wed Dec  8 12:08:56 PST 2010
[   39.340188] EXT4-fs (sda9): re-mounted. Opts: (null)
[   39.687754] EXT4-fs (sda7): mounted filesystem with ordered data mode. Opts: (null)
[   39.771338] EXT4-fs (sda6): mounted filesystem with ordered data mode. Opts: (null)
[   60.680652] fbcondecor: console 0 using theme 'sabayon'
[   60.700562] fbcondecor: switched decor state to 'on' on console 0

I marked this as critical because it makes all my sabayon computers untrustable and unusable for actual work. I do not have any non-sabayon computer now, so I'm really stuck here...

adding Xorg logs:

cat /var/log/Xorg.0.log|pastebunz 
http://pastebin.sabayon.org/pastie/5764
root# /home/quesada# # cat /var/log/Xorg.0.log.old |pastebunz 
http://pastebin.sabayon.org/pastie/5765

it happens every night. Very disturbing.
I was using kdm to start the system, this produces a kde4init process that I'd love to remove just in case; will switch to gdm and see...

and this is immediately after a crash:
# cat /var/log/Xorg.0.log|pastebunz 
http://pastebin.sabayon.org/pastie/5766
root# /home/quesada# # cat /var/log/Xorg.0.log.old|pastebunz 
http://pastebin.sabayon.org/pastie/5767

Comment 5 Fabio Erculiani 2011-02-26 23:58:34 UTC

1. DO NOT USE PASTEBIN WITH BUGZILLA
2. DO NOT PASTE TONS OF TEXT TOO!

:)
Ok sorry.
I normally do twitter-sized bug reports. But when important info to debug is probably on a log, where should I put it? Or are you saying a log is never required on a bug report?

Comment 7 Fabio Erculiani 2011-02-27 13:24:28 UTC

Attachments.

After removing all traces of kde, this is the first night that I'm not logged out when I return in the morning. Changed to using gdm and gnome + xmonad. I suspect this could have to do with kdeinit4. It's a process that is launched when you open any kde application, and in their docs they say there may be plenty of bugs. So even though I was never using full kde, just opening any kde application would expose me to any kdeinit4 bug. No idea how this manages to crash X, if this is at all the explanation. Will report back.

The spontaneous logout/X crash still happens on a system with all traces of kde removed. Bummer.

 
Some more info. 
I'm assuming the pipe of things that can cause this bug (let's say it's an X crash) goes like this:

hardware > card drivers > Xorg > wm > application

I discard hardware because it happens in >1 computers with very differnent cards
I discard card drivers because it happens with nvidia proprietary and also with nouveau
I discard wm because I've tried several. xmonad is my default and it's pretty solid

I'm leaning towards Xorg. But then other distros should be complaining about this too...

Any other assumptions that should be I tested? 

possibly related bugs:
http://bugs.sabayon.org/show_bug.cgi?id=1878
http://bugs.sabayon.org/show_bug.cgi?id=2190

The only computer in which I do not see this behaviour is a 8 year old dell, 32 bit, that I didn't upgrade to x11-base/xorg-server-1.9.4 (running  x11-base/xorg-server-1.9.3-r1). Not sure if this is relevant.

I've tried both xmonad and awesome, crashes still persist. The 8yo dell doesn't have a nvidia card, maybe that explains its stability? Something is very wrong here...

Comment 13 Fabio Erculiani 2011-03-07 20:29:21 UTC

Is there anything inside /var/log/Xorg.* (even old ones)
X crashes are recorded there.

Care to provide hardware info? (lspci would be good enough for now).

Created attachment 398 [details]
xorg log after a crash

Created attachment 399 [details]
several more on the thread itself

Just hit me.
I wrongly attributed the crashes to KDE 4.6 to start with, because that was 'new' when the crashes started.
But the one tool I started using about the same time was libreoffice:
http://blog.whats-your.name/post/2011/02/06/Libreoffice-fail

not sure how an app could crash X, but weirder things are known to exist...

Created attachment 401 [details]
xorg log after a crash

Still suffering from this bug. I'm getting to the end of my debugging ability and ideas.

Comment 19 Fabio Erculiani 2011-03-25 13:45:26 UTC

[1373910.234] (EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X
[1373910.234] (EE) NVIDIA(0):     log file that the GLX module has been loaded in your X
[1373910.234] (EE) NVIDIA(0):     server, and that the module is the NVIDIA GLX module.  If
[1373910.234] (EE) NVIDIA(0):     you continue to encounter problems, Please try
[1373910.234] (EE) NVIDIA(0):     reinstalling the NVIDIA driver.

What is this?

Can you reproduce the issue using one of the latest ISO images (running in Live mode)?

Comment 20 Fabio Erculiani 2011-03-25 13:53:07 UTC

To me it's either a hardware issue or a driver issue (nvidia).
There's nothing I can do without the faulty hardware. Sorry.

I think it can be libreoffice:

http://groups.google.com/group/linux.debian.bugs.dist/browse_thread/thread/9e158b00cb37bc8e

"Going to 'File' -> 'export to PDF', I check the 'PDF/A-1a' checkbox, click on
'Export', after a couple of seconds of work, libreoffice makes my X server
crash and I'm back to gdm prompt. "

How an app can crash X is beyond me.

I'm also buying an ATI card to see if the crashes persist. If so, I'll just close the bug.
Thanks

Comment 22 Joost Ruis 2011-05-04 08:32:51 UTC

Cannot reproduce it here. Even not the Libreoffice PDF export thing.
Suggest we close this CANTFIX.

I 'Fixed' this on the desktop by buying another card. It was 50 eur, so cheap enough to be worth trying. Crashes seem to have been greatly reduced. It's another nvidia, so this problem may be specific to one nvidia chipset. On the laptop, crashes are still there. I cannot change the card there :). I have no idea what the real cause was (overheating? the new card has a fan, the old one doesn't) but I'll close this as fixed.

Comment 24 Fabio Erculiani 2011-05-04 10:37:39 UTC

WORKSFORME is more appropriate