[Bug 589874] [NEW] nouveau crash on turning off hybrid graphics

Fri Jun 4 20:45:35 UTC 2010

Public bug reported:

Binary package hint: linux-image-2.6.34-5-generic

I have a Sony Vaio-Z laptop with hybrid graphics (intel/nvidia). Power
consumption is high due to the Nvidia card remaining powered while I use
the Intel card (3 hour battery rather than 5hours). I attempted to turn
off the Nvidia card with:

sudo -i
echo OFF > /sys/kernel/debug/vga_switcheroo/switch

The process dies with the following kernel log:

[ 9065.724354] VGA switcheroo: switched nouveau off
[ 9065.724388] BUG: unable to handle kernel NULL pointer dereference at 000000c5
[ 9065.724398] IP: [<f88ce057>] nouveau_pci_suspend+0x37/0x360 [nouveau]
[ 9065.724429] *pde = bb217067 
[ 9065.724436] Oops: 0000 [#1] SMP 
[ 9065.724444] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
[ 9065.724452] Modules linked in: snd_seq_dummy aes_i586 aes_generic usb_storage cdc_acm autofs4 rfcomm binfmt_misc sco ppdev bridge stp bnep l2cap tpm_infineon snd_hda_codec_realtek joydev nfsd exportfs nfs lockd nfs_acl auth_rpcgss arc4 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq iwlagn snd_timer snd_seq_device pcmcia vga16fb vgastate iwlcore sunrpc snd mac80211 nouveau i915 tpm_tis lp soundcore uvcvideo videodev v4l1_compat btusb bluetooth psmouse serio_raw cfg80211 sdhci_pci sdhci led_class yenta_socket rsrc_nonstatic pcmcia_core ttm drm_kms_helper tpm snd_page_alloc tpm_bios intel_agp parport drm agpgart i2c_algo_bit video output usbhid hid ohci1394 ieee1394 ahci e1000e
[ 9065.724610] 
[ 9065.724619] Pid: 8068, comm: bash Not tainted 2.6.34-5-generic #14~lucid1-Ubuntu VAIO/VGNZ890G
[ 9065.724626] EIP: 0060:[<f88ce057>] EFLAGS: 00010286 CPU: 0
[ 9065.724648] EIP is at nouveau_pci_suspend+0x37/0x360 [nouveau]
[ 9065.724655] EAX: 00000000 EBX: f50bac00 ECX: c07b5bb4 EDX: 00000002
[ 9065.724661] ESI: ffffffed EDI: f7195000 EBP: ed845ed4 ESP: ed845ea0
[ 9065.724667]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 9065.724675] Process bash (pid: 8068, ti=ed844000 task=f1ef19a0 task.ti=ed844000)
[ 9065.724680] Stack:
[ 9065.724683]  00000000 00000008 ed845ef8 c01eb882 4d997067 c3957126 f7195000 f64bbe18
[ 9065.724700] <0> 00000002 ed845ed4 f7195000 ed845f14 09e08408 ed845ee4 f88cfcfb f892baf0
[ 9065.724717] <0> c09475f0 ed845ef0 c03d69b2 00000004 ed845f64 c03d6e44 ed845f30 c01ec6c4
[ 9065.724736] Call Trace:
[ 9065.724750]  [<c01eb882>] ? do_wp_page+0x392/0x990
[ 9065.724779]  [<f88cfcfb>] ? nouveau_switcheroo_set_state+0x2b/0x60 [nouveau]
[ 9065.724794]  [<c03d69b2>] ? vga_switchoff+0x12/0x30
[ 9065.724803]  [<c03d6e44>] ? vga_switcheroo_debugfs_write+0xe4/0x2b0
[ 9065.724813]  [<c01ec6c4>] ? handle_mm_fault+0x304/0x400
[ 9065.724824]  [<c02fa854>] ? security_file_permission+0x14/0x20
[ 9065.724834]  [<c0210474>] ? rw_verify_area+0x64/0xe0
[ 9065.724842]  [<c0210592>] ? vfs_write+0xa2/0x1a0
[ 9065.724851]  [<c03d6d60>] ? vga_switcheroo_debugfs_write+0x0/0x2b0
[ 9065.724860]  [<c0210e72>] ? sys_write+0x42/0x70
[ 9065.724870]  [<c05b37bc>] ? syscall_call+0x7/0xb
[ 9065.724875] Code: 89 7d fc 0f 1f 44 00 00 be ed ff ff ff 89 c7 8d 40 60 89 55 ec e8 2a 99 b2 c7 89 c3 8b 80 40 02 00 00 89 45 e8 8b 83 5c 02 00 00 <f6> 80 c5 00 00 00 20 74 08 83 7d ec 08 75 11 31 f6 89 f0 8b 5d 
[ 9065.724974] EIP: [<f88ce057>] nouveau_pci_suspend+0x37/0x360 [nouveau] SS:ESP 0068:ed845ea0
[ 9065.725002] CR2: 00000000000000c5
[ 9065.725014] ---[ end trace c2bf472d20da196b ]---

My kernel is:
$ uname -a
Linux snappy 2.6.34-5-generic #14~lucid1-Ubuntu SMP Thu Jun 3 14:58:56 UTC 2010 i686 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image (not installed)
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.34-5.14~lucid1-generic 2.6.34
Uname: Linux 2.6.34-5-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.22.1.
Architecture: i386
ArecordDevices:
 Failed to stat runtime directory /home/sbarber/.pulse/27997ec539688e9f6e2b95634b190c7b-runtime: Invalid argument
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xee920000 irq 32'
   Mixer name	: 'Realtek ALC262'
   Components	: 'HDA:10ec0262,104d2f00,00100302 HDA:14f12c06,104d1700,00100000'
   Controls      : 18
   Simple ctrls  : 10
Date: Fri Jun  4 13:37:38 2010
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Sony Corporation VGNZ890G
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.34-5-generic root=UUID=d3242170-a3b3-42b4-bbd0-3a56b3d152b8 ro crashkernel=384M-2G:64M,2G-:128M quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
SourcePackage: linux
dmi.bios.date: 08/18/2009
dmi.bios.vendor: INSYDE
dmi.bios.version: R5030M3
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnINSYDE:bvrR5030M3:bd08/18/2009:svnSonyCorporation:pnVGNZ890G:pvrA222FLWA:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VGNZ890G
dmi.product.version: A222FLWA
dmi.sys.vendor: Sony Corporation

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug graphics i386 lucid needs-upstream-testing

-- 
nouveau crash on turning off hybrid graphics
https://bugs.launchpad.net/bugs/589874
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