Created attachment 73631 [details] error screenshot I was testing Ubuntu 12.10 Quantal Quetzal's kernel on Ubuntu 12.04 Precise Pangolin LTS (http://packages.qa.dev.stgraber.org/qatracker/milestones/223/builds/16265/testcases/1301/results). After having installed the 12.10 kernel and having rebooted by PC I could not log on to my user's session and got the error message: "failed to load session "ubuntu"". I'm attaching a picture of the error message. I was asked to test the latest upstream kernel to see if the problem still occurred, so I installed the latest v3.5kernel (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.5-rc2-quantal/) but the problem still occurred. This is the bug I reported on launchpad: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1011828. This is the hardware of my PC: root@letozaf-pc:/home/letozaf# lshw letozaf-pc description: Desktop Computer product: System Product Name (To Be Filled By O.E.M.) vendor: System manufacturer version: System Version serial: System Serial Number width: 64 bits capabilities: smbios-2.4 dmi-2.4 vsyscall32 configuration: boot=normal chassis=desktop family=To Be Filled By O.E.M. sku=To Be Filled By O.E.M. uuid=545870AC-74FE-D511-8353-8D2F052F7D1A *-core description: Motherboard product: M2N vendor: ASUSTeK Computer INC. physical id: 0 version: Rev 1.xx serial: MB-1234567890 slot: To Be Filled By O.E.M. *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: 0702 date: 05/28/2007 size: 64KiB capacity: 448KiB capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification *-cpu description: CPU product: AMD Athlon(tm) 64 X2 Dual Core Processor 6000+ vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 3 bus info: cpu@0 version: AMD Athlon(tm) 64 X2 Dual Core Processor 6000+ serial: To Be Filled By O.E.M. slot: CPU 1 size: 3GHz capacity: 3GHz width: 64 bits clock: 200MHz capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp x86-64 3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy cpufreq *-cache:0 description: L1 cache physical id: 5 slot: L1-Cache size: 256KiB capacity: 256KiB capabilities: pipeline-burst internal varies data *-cache:1 description: L2 cache physical id: 6 slot: L2-Cache size: 2MiB capacity: 2MiB capabilities: pipeline-burst internal varies unified *-memory:0 description: System Memory physical id: 33 slot: System board or motherboard size: 6GiB *-bank:0 description: DIMM DDR2 Synchronous 800 MHz (1.2 ns) product: PartNum0 vendor: Manufacturer0 physical id: 0 serial: SerNum0 slot: DIMM0 size: 2GiB width: 64 bits clock: 800MHz (1.2ns) *-bank:1 description: DIMM DDR2 Synchronous 800 MHz (1.2 ns) product: PartNum1 vendor: Manufacturer1 physical id: 1 serial: SerNum1 slot: DIMM1 size: 2GiB width: 64 bits clock: 800MHz (1.2ns) *-bank:2 description: DIMM DDR2 Synchronous 800 MHz (1.2 ns) product: PartNum2 vendor: Manufacturer2 physical id: 2 serial: SerNum2 slot: DIMM2 size: 1GiB width: 64 bits clock: 800MHz (1.2ns) *-bank:3 description: DIMM DDR2 Synchronous 800 MHz (1.2 ns) product: PartNum3 vendor: Manufacturer3 physical id: 3 serial: SerNum3 slot: DIMM3 size: 1GiB width: 64 bits clock: 800MHz (1.2ns) *-memory:1 UNCLAIMED description: RAM memory product: MCP61 Memory Controller vendor: NVIDIA Corporation physical id: 4 bus info: pci@0000:00:00.0 version: a1 width: 32 bits clock: 66MHz (15.2ns) capabilities: ht bus_master cap_list configuration: latency=0 *-isa description: ISA bridge product: MCP61 LPC Bridge vendor: NVIDIA Corporation physical id: 1 bus info: pci@0000:00:01.0 version: a2 width: 32 bits clock: 66MHz capabilities: isa bus_master configuration: latency=0 resources: ioport:900(size=256) *-serial description: SMBus product: MCP61 SMBus vendor: NVIDIA Corporation physical id: 1.1 bus info: pci@0000:00:01.1 version: a2 width: 32 bits clock: 66MHz capabilities: pm cap_list configuration: driver=nForce2_smbus latency=0 resources: irq:10 ioport:dc00(size=64) ioport:600(size=64) ioport:700(size=64) *-memory:2 UNCLAIMED description: RAM memory product: MCP61 Memory Controller vendor: NVIDIA Corporation physical id: 1.2 bus info: pci@0000:00:01.2 version: a2 width: 32 bits clock: 66MHz (15.2ns) configuration: latency=0 *-usb:0 description: USB controller product: MCP61 USB 1.1 Controller vendor: NVIDIA Corporation physical id: 2 bus info: pci@0000:00:02.0 version: a2 width: 32 bits clock: 66MHz capabilities: pm ohci bus_master cap_list configuration: driver=ohci_hcd latency=0 maxlatency=1 mingnt=3 resources: irq:23 memory:dbfff000-dbffffff *-usb:1 description: USB controller product: MCP61 USB 2.0 Controller vendor: NVIDIA Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: a2 width: 32 bits clock: 66MHz capabilities: debug pm ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 maxlatency=1 mingnt=3 resources: irq:22 memory:dbffec00-dbffecff *-pci:0 description: PCI bridge product: MCP61 PCI bridge vendor: NVIDIA Corporation physical id: 100 bus info: pci@0000:00:04.0 version: a1 width: 32 bits clock: 66MHz capabilities: pci ht subtractive_decode bus_master cap_list *-multimedia description: Audio device product: MCP61 High Definition Audio vendor: NVIDIA Corporation physical id: 5 bus info: pci@0000:00:05.0 version: a2 width: 32 bits clock: 66MHz capabilities: pm msi ht bus_master cap_list configuration: driver=snd_hda_intel latency=0 maxlatency=5 mingnt=2 resources: irq:22 memory:dbff8000-dbffbfff *-ide:0 description: IDE interface product: MCP61 IDE vendor: NVIDIA Corporation physical id: 6 bus info: pci@0000:00:06.0 version: a2 width: 32 bits clock: 66MHz capabilities: ide pm bus_master cap_list configuration: driver=pata_amd latency=0 maxlatency=1 mingnt=3 resources: irq:0 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:ffa0(size=16) *-bridge description: Ethernet interface product: MCP61 Ethernet vendor: NVIDIA Corporation physical id: 7 bus info: pci@0000:00:07.0 logical name: eth0 version: a2 serial: 00:1b:fc:ad:15:a2 size: 1000000000 capacity: 1000000000 width: 32 bits clock: 66MHz capabilities: bridge pm msi ht bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=forcedeth driverversion=0.64 duplex=full ip=192.168.11.10 latency=0 link=yes maxlatency=20 mingnt=1 multicast=yes port=MII speed=1Gbit/s resources: irq:43 memory:dbffd000-dbffdfff ioport:d480(size=8) *-ide:1 description: IDE interface product: MCP61 SATA Controller vendor: NVIDIA Corporation physical id: 8 bus info: pci@0000:00:08.0 logical name: scsi0 logical name: scsi1 version: a2 width: 32 bits clock: 66MHz capabilities: ide pm msi ht bus_master cap_list emulated configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3 resources: irq:21 ioport:d400(size=8) ioport:d080(size=4) ioport:d000(size=8) ioport:cc00(size=4) ioport:c880(size=16) memory:dbffc000-dbffcfff *-disk description: ATA Disk product: SAMSUNG HD403LJ physical id: 0 bus info: scsi@0:0.0.0 logical name: /dev/sda version: CT10 serial: S0NFJ1EP902166 size: 372GiB (400GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=f6bf21de *-volume:0 description: EXT4 volume vendor: Linux physical id: 1 bus info: scsi@0:0.0.0,1 logical name: /dev/sda1 logical name: / version: 1.0 serial: 85f8c649-a0b7-4899-8b56-cf85fbe7f8e5 size: 53GiB capacity: 53GiB capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2012-03-02 22:12:35 filesystem=ext4 lastmountpoint=/ modified=2012-04-10 21:25:46 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered mounted=2012-06-14 17:42:27 state=mounted *-volume:1 description: EXT4 volume vendor: Linux physical id: 2 bus info: scsi@0:0.0.0,2 logical name: /dev/sda2 logical name: /home version: 1.0 serial: 7559004b-3edf-46f5-8faa-723082912704 size: 306GiB capacity: 306GiB capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized configuration: created=2010-02-15 13:12:44 filesystem=ext4 lastmountpoint=/home modified=2012-06-14 17:42:27 mount.fstype=ext4 mount.options=rw,relatime,user_xattr,acl,barrier=1,data=ordered mounted=2012-06-14 17:42:27 state=mounted *-volume:2 description: Linux swap volume physical id: 3 bus info: scsi@0:0.0.0,3 logical name: /dev/sda3 version: 1 serial: aa591f66-2a28-435e-8570-155157c9a301 size: 3074MiB capacity: 3074MiB capabilities: primary nofs swap initialized configuration: filesystem=swap pagesize=4096 *-volume:3 description: Extended partition physical id: 4 bus info: scsi@0:0.0.0,4 logical name: /dev/sda4 size: 9998MiB capacity: 9998MiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume description: W95 FAT32 partition physical id: 5 logical name: /dev/sda5 capacity: 9998MiB *-cdrom description: DVD-RAM writer product: CDDVDW SH-S203B vendor: TSSTcorp physical id: 1 bus info: scsi@1:0.0.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/sr0 version: SB00 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=nodisc *-ide:2 description: IDE interface product: MCP61 SATA Controller vendor: NVIDIA Corporation physical id: 8.1 bus info: pci@0000:00:08.1 version: a2 width: 32 bits clock: 66MHz capabilities: ide pm msi ht bus_master cap_list configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3 resources: irq:20 ioport:c800(size=8) ioport:c480(size=4) ioport:c400(size=8) ioport:c080(size=4) ioport:c000(size=16) memory:dbff3000-dbff3fff *-pci:1 description: PCI bridge product: MCP61 PCI Express bridge vendor: NVIDIA Corporation physical id: 9 bus info: pci@0000:00:09.0 version: a2 width: 32 bits clock: 33MHz capabilities: pci pm msi ht pciexpress normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:40 ioport:e000(size=4096) memory:dc000000-dfffffff ioport:c0000000(size=268435456) *-display description: VGA compatible controller product: G86 [GeForce 8400 GS] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:02:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:19 memory:df000000-dfffffff memory:c0000000-cfffffff memory:dc000000-ddffffff ioport:ec00(size=128) memory:defe0000-deffffff *-pci:2 description: PCI bridge product: MCP61 PCI Express bridge vendor: NVIDIA Corporation physical id: b bus info: pci@0000:00:0b.0 version: a2 width: 32 bits clock: 33MHz capabilities: pci pm msi ht pciexpress normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:41 *-pci:3 description: PCI bridge product: MCP61 PCI Express bridge vendor: NVIDIA Corporation physical id: c bus info: pci@0000:00:0c.0 version: a2 width: 32 bits clock: 33MHz capabilities: pci pm msi ht pciexpress normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:42 *-pci:4 description: Host bridge product: K8 [Athlon64/Opteron] HyperTransport Technology Configuration vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 101 bus info: pci@0000:00:18.0 version: 00 width: 32 bits clock: 33MHz *-pci:5 description: Host bridge product: K8 [Athlon64/Opteron] Address Map vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 102 bus info: pci@0000:00:18.1 version: 00 width: 32 bits clock: 33MHz *-pci:6 description: Host bridge product: K8 [Athlon64/Opteron] DRAM Controller vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 103 bus info: pci@0000:00:18.2 version: 00 width: 32 bits clock: 33MHz configuration: driver=amd64_edac resources: irq:0 *-pci:7 description: Host bridge product: K8 [Athlon64/Opteron] Miscellaneous Control vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 104 bus info: pci@0000:00:18.3 version: 00 width: 32 bits clock: 33MHz configuration: driver=k8temp resources: irq:0 *-scsi physical id: a bus info: usb@1:6 logical name: scsi6 capabilities: emulated scsi-host configuration: driver=usb-storage *-disk:0 description: SCSI Disk product: STORAGE DEVICE vendor: Generic physical id: 0.0.0 bus info: scsi@6:0.0.0 logical name: /dev/sdb version: 9602 capabilities: removable *-medium physical id: 0 logical name: /dev/sdb *-disk:1 description: SCSI Disk product: STORAGE DEVICE vendor: Generic physical id: 0.0.1 bus info: scsi@6:0.0.1 logical name: /dev/sdc version: 9602 capabilities: removable *-medium physical id: 0 logical name: /dev/sdc *-disk:2 description: SCSI Disk product: STORAGE DEVICE vendor: Generic physical id: 0.0.2 bus info: scsi@6:0.0.2 logical name: /dev/sdd version: 9602 capabilities: removable *-medium physical id: 0 logical name: /dev/sdd *-disk:3 description: SCSI Disk product: STORAGE DEVICE vendor: Generic physical id: 0.0.3 bus info: scsi@6:0.0.3 logical name: /dev/sde version: 9602 capabilities: removable *-medium physical id: 0 logical name: /dev/sde
Doesn't appear to be anything to do with the kernel