Prem Anand, this bug report is being closed https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1205329/comments/10 due to your last comment regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.
** Changed in: linux (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1205329 Title: Nouveau crashes at nouveau_object_decf on logout and system hangs on restarting lightdm Status in “linux” package in Ubuntu: Invalid Bug description: I am seeing nouveau consistently crashing @ nouveau_object_decf on logging out. On trying to restart the display manager, it hangs [29140.815287] nouveau E[ I2C][0000:01:00.0] AUXCH(1): begin idle timeout 0xffffffff [29140.816398] nouveau E[ I2C][0000:01:00.0] AUXCH(1): begin idle timeout 0xffffffff [29140.817495] nouveau E[ I2C][0000:01:00.0] AUXCH(3): begin idle timeout 0xffffffff [29140.819535] nouveau E[ I2C][0000:01:00.0] AUXCH(3): begin idle timeout 0xffffffff [29140.821547] nouveau E[ I2C][0000:01:00.0] AUXCH(2): begin idle timeout 0xffffffff [29140.823558] nouveau E[ I2C][0000:01:00.0] AUXCH(2): begin idle timeout 0xffffffff [29264.387025] BUG: unable to handle kernel NULL pointer dereference at (null) [29264.387062] IP: [< (null)>] (null) [29264.387081] PGD 0 [29264.387090] Oops: 0010 [#1] SMP [29264.387105] Modules linked in: snd_hda_codec_hdmi intel_powerclamp coretemp lib80211_crypt_tkip kvm_intel kvm crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd joydev applesmc input_polldev snd_hda_codec_cirrus parport_pc ppdev uvcvideo snd_hda_intel wl(POF) microcode snd_hda_codec videobuf2_vmalloc videobuf2_memops snd_hwdep videobuf2_core snd_seq_midi bnep snd_seq_midi_event rfcomm videodev snd_rawmidi snd_pcm bluetooth bcm5974 snd_seq snd_page_alloc lib80211 lpc_ich cfg80211 mei_me mei snd_seq_device snd_timer snd apple_gmux soundcore apple_bl mac_hid binfmt_misc nls_iso8859_1 lp parport hid_apple nouveau mxm_wmi hid_generic i915 wmi sdhci_pci tg3 ttm ahci i2c_algo_bit sdhci usbhid drm_kms_helper libahci ptp hid drm pps_core video [last unloaded: btusb] [29264.387428] CPU: 3 PID: 1337 Comm: Xorg Tainted: PF W O 3.10.2-031002-generic #201307212216 [29264.387460] Hardware name: Apple Inc. MacBookPro10,1/Mac-C3EC7CD22292981F, BIOS MBP101.88Z.00EE.B03.1212211437 12/21/2012 [29264.387498] task: ffff880452ea5dc0 ti: ffff8804570c2000 task.ti: ffff8804570c2000 [29264.387524] RIP: 0010:[<0000000000000000>] [< (null)>] (null) [29264.387551] RSP: 0018:ffff8804570c3af0 EFLAGS: 00010246 [29264.387570] RAX: ffffffffa02c0020 RBX: ffff88045717eb00 RCX: 00000000e0000000 [29264.387595] RDX: 0000000000000005 RSI: 0000000000000000 RDI: ffff88045717eb00 [29264.387620] RBP: ffff8804570c3b08 R08: 0000000000000000 R09: 00000000ffffffff [29264.387645] R10: ffffffffa021cb37 R11: 0000000000000002 R12: 0000000000000001 [29264.387671] R13: 0000000000000000 R14: ffff880458354688 R15: 0000000000000000 [29264.387696] FS: 0000000000000000(0000) GS:ffff88046f2c0000(0000) knlGS:0000000000000000 [29264.387725] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29264.387745] CR2: 0000000000000000 CR3: 0000000002c0d000 CR4: 00000000001407e0 [29264.387770] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [29264.387795] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [29264.387819] Stack: [29264.387827] ffffffffa01fb83a 0000000000000000 ffff88045717eb00 ffff8804570c3b38 [29264.387857] ffffffffa01fb7dd ffff880458354670 ffff880458354670 0000000000000000 [29264.387885] ffff880458354660 ffff8804570c3b98 ffffffffa01fa0db ffffffffa02b3c31 [29264.387913] Call Trace: [29264.387939] [<ffffffffa01fb83a>] ? nouveau_object_decf+0x3a/0xd0 [nouveau] [29264.387972] [<ffffffffa01fb7dd>] nouveau_object_dec+0x6d/0x90 [nouveau] [29264.388005] [<ffffffffa01fa0db>] nouveau_handle_fini+0x13b/0x2b0 [nouveau] [29264.388039] [<ffffffffa01f8221>] nouveau_client_fini+0x61/0xa0 [nouveau] [29264.388081] [<ffffffffa0271adf>] nouveau_cli_destroy+0x2f/0x50 [nouveau] [29264.388119] [<ffffffffa0271b99>] nouveau_drm_postclose+0x19/0x20 [nouveau] [29264.388152] [<ffffffffa001a0b0>] drm_release+0x340/0x520 [drm] [29264.388176] [<ffffffff811a1e9a>] __fput+0xba/0x240 [29264.388195] [<ffffffff811a202e>] ____fput+0xe/0x10 [29264.388215] [<ffffffff8107cda8>] task_work_run+0xc8/0xf0 [29264.388235] [<ffffffff8105f6ae>] do_exit+0x19e/0x480 [29264.388256] [<ffffffff810b919f>] ? __unqueue_futex+0x3f/0x80 [29264.388278] [<ffffffff8106c4db>] ? __dequeue_signal+0x6b/0xb0 [29264.388299] [<ffffffff8105fa24>] do_group_exit+0x44/0xa0 [29264.388320] [<ffffffff8106f621>] get_signal_to_deliver+0x231/0x480 [29264.388345] [<ffffffff81013bc7>] do_signal+0x47/0x140 [29264.388366] [<ffffffff8109350c>] ? account_user_time+0x9c/0xb0 [29264.388387] [<ffffffff81093b34>] ? vtime_account_user+0x74/0x90 [29264.388410] [<ffffffff81013d48>] do_notify_resume+0x88/0xc0 [29264.388433] [<ffffffff8172231a>] int_signal+0x12/0x17 [29264.388451] Code: Bad RIP value. [29264.388467] RIP [< (null)>] (null) [29264.388487] RSP <ffff8804570c3af0> [29264.388499] CR2: 0000000000000000 [29264.388525] ---[ end trace 4ca6bffe89780c0c ]--- [29264.388543] Fixing recursive fault but reboot is needed! ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: xorg 1:7.7+1ubuntu4 Uname: Linux 3.10.2-031002-generic x86_64 NonfreeKernelModules: wl .tmp.unity.support.test.0: ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Fri Jul 26 14:16:04 2013 DistUpgraded: Fresh install DistroCodename: raring DistroVariant: ubuntu DkmsStatus: bcmwl, 6.30.223.30+bdcom, 3.10.2-031002-generic, x86_64: installed ExtraDebuggingInterest: Yes, if not too technical GpuHangFrequency: Several times a day GpuHangReproducibility: Yes, I can easily reproduce it GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Apple Inc. Device [106b:00f7] NVIDIA Corporation GK107M [GeForce GT 650M Mac Edition] [10de:0fd5] (rev ff) (prog-if ff) InstallationDate: Installed on 2013-07-11 (14 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Apple Inc. MacBookPro10,1 MarkForUpload: True ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: ro root=/dev/sda4 initrd=\EFI\Ubuntu\initrd.img-3.10.2-031002-generic SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/21/2012 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP101.88Z.00EE.B03.1212211437 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-C3EC7CD22292981F dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro10,1 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-C3EC7CD22292981F dmi.modalias: dmi:bvnAppleInc.:bvrMBP101.88Z.00EE.B03.1212211437:bd12/21/2012:svnAppleInc.:pnMacBookPro10,1:pvr1.0:rvnAppleInc.:rnMac-C3EC7CD22292981F:rvrMacBookPro10,1:cvnAppleInc.:ct10:cvrMac-C3EC7CD22292981F: dmi.product.name: MacBookPro10,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.43-0ubuntu1.1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1 xserver.bootTime: Fri Jul 26 13:58:40 2013 xserver.configfile: default xserver.errors: Failed to load module "nvidia" (module does not exist, 0) Failed to load module "nvidia" (module does not exist, 0) NOUVEAU(G0): [XvMC] Failed to initialize extension. xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.13.3-0ubuntu6 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1205329/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp