Thanks a lot for your help Nick...I followed the instructions in the first
mail but then I lost track of what to do after rebooting. The preference
file in etc folder was already there and the next command for upgradable
packages did not work.So, that is exactly where I lost track of it.And I
did not understand what the second mail was about.Do you want me to run
them in the terminal?I did try but if you could just tell me what commands
I gotta run, it will be very helpful.

Thank You Again

On Sun, Apr 28, 2013 at 4:10 PM, Nick Demou <email address hidden> wrote:

> seems also fixed for me after installing kernel 3.5.0-28-generic from
> precise-proposed (at least after the first 3 hours of testing). Many
> thanks to all who helped.
>
> uname -a
> Linux ndXPS13 3.5.0-28-generic #48~precise1-Ubuntu SMP Wed Apr 24 21:43:05
> UTC 2013 i686 i686 i386 GNU/Linux
>
> cat /etc/lsb-release
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=12.04
> DISTRIB_CODENAME=precise
> DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS"
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1173768).
> https://bugs.launchpad.net/bugs/1140716
>
> Title:
>   [regression] 3.5.0-26-generic and  3.2.0-39-generic GPU hangs on
>   Sandybridge
>
> Status in “linux” package in Ubuntu:
>   Invalid
> Status in “linux-lts-quantal” package in Ubuntu:
>   Invalid
> Status in “linux” source package in Precise:
>   Fix Committed
> Status in “linux-lts-quantal” source package in Precise:
>   Confirmed
> Status in “linux” source package in Quantal:
>   Fix Committed
> Status in “linux-lts-quantal” source package in Quantal:
>   Invalid
> Status in “linux” source package in Raring:
>   Invalid
> Status in “linux-lts-quantal” source package in Raring:
>   Invalid
>
> Bug description:
>   I'm getting errors about GPU hangs every minute or so (usually only
>   when using FF and scrolling a webpage or something). I also get an
>   annoying ubuntu dialog saying there is a "system error".
>
>   This didn't happen with 3.5.0-24-generic.
>
>   Here is the dmesg:
>   [15169.033709] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [15169.034517] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [15628.480216] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [15628.480570] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [15844.231372] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [15844.231773] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [20173.232593] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [20173.233211] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [26285.650393] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [26285.650980] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [26285.658405] ------------[ cut here ]------------
>   [26285.658472] WARNING: at
> /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/intel_pm.c:2505
> gen6_enable_rps+0x706/0x710 [i915]()
>   [26285.658474] Hardware name: SATELLITE Z830
>   [26285.658476] Modules linked in: sdhci_pci sdhci btrfs zlib_deflate
> libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs reiserfs ext2
> snd_hda_codec_hdmi snd_hda_codec_realtek joydev btusb coretemp kvm_intel
> kvm arc4 ghash_clmulni_intel aesni_intel cryptd aes_x86_64 snd_hda_intel
> snd_hda_codec snd_hwdep uvcvideo snd_pcm videobuf2_core microcode videodev
> bnep iwlwifi videobuf2_vmalloc snd_seq_midi psmouse videobuf2_memops
> snd_rawmidi rfcomm pcspkr snd_seq_midi_event serio_raw snd_seq bluetooth
> mac80211 snd_timer snd_seq_device i915 drm_kms_helper cfg80211 drm
> toshiba_acpi snd sparse_keymap soundcore wmi i2c_algo_bit toshiba_bluetooth
> snd_page_alloc parport_pc mei video mac_hid lpc_ich ppdev nfsd nfs lockd
> fscache auth_rpcgss nfs_acl sunrpc lp parport e1000e ahci libahci [last
> unloaded: sdhci]
>   [26285.658537] Pid: 23433, comm: kworker/u:0 Not tainted
> 3.5.0-26-generic #40-Ubuntu
>   [26285.658539] Call Trace:
>   [26285.658549]  [<ffffffff81051bef>] warn_slowpath_common+0x7f/0xc0
>   [26285.658553]  [<ffffffff81051c4a>] warn_slowpath_null+0x1a/0x20
>   [26285.658569]  [<ffffffffa02d32e6>] gen6_enable_rps+0x706/0x710 [i915]
>   [26285.658584]  [<ffffffffa02bf3f6>] intel_modeset_init_hw+0x66/0xa0
> [i915]
>   [26285.658595]  [<ffffffffa02954b4>] i915_reset+0x1a4/0x6e0 [i915]
>   [26285.658601]  [<ffffffff8101257b>] ? __switch_to+0x12b/0x420
>   [26285.658612]  [<ffffffffa029a943>] i915_error_work_func+0xc3/0x110
> [i915]
>   [26285.658618]  [<ffffffff8107097a>] process_one_work+0x12a/0x420
>   [26285.658629]  [<ffffffffa029a880>] ? gen6_pm_rps_work+0xe0/0xe0 [i915]
>   [26285.658632]  [<ffffffff8107152e>] worker_thread+0x12e/0x2f0
>   [26285.658636]  [<ffffffff81071400>] ? manage_workers.isra.26+0x200/0x200
>   [26285.658640]  [<ffffffff81076023>] kthread+0x93/0xa0
>   [26285.658644]  [<ffffffff8168a3e4>] kernel_thread_helper+0x4/0x10
>   [26285.658649]  [<ffffffff81075f90>] ?
> kthread_freezable_should_stop+0x70/0x70
>   [26285.658652]  [<ffffffff8168a3e0>] ? gs_change+0x13/0x13
>   [26285.658654] ---[ end trace 59c6162fdfcbffee ]---
>   [26756.021167] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [26756.021426] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [26766.014093] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [26766.014397] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [26932.376233] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer
> elapsed... GPU hung
>   [26932.376544] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
>   [26932.384285] ------------[ cut here ]------------
>   [26932.384354] WARNING: at
> /build/buildd/linux-3.5.0/drivers/gpu/drm/i915/intel_pm.c:2505
> gen6_enable_rps+0x706/0x710 [i915]()
>   [26932.384356] Hardware name: SATELLITE Z830
>   [26932.384358] Modules linked in: sdhci_pci sdhci btrfs zlib_deflate
> libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs reiserfs ext2
> snd_hda_codec_hdmi snd_hda_codec_realtek joydev btusb coretemp kvm_intel
> kvm arc4 ghash_clmulni_intel aesni_intel cryptd aes_x86_64 snd_hda_intel
> snd_hda_codec snd_hwdep uvcvideo snd_pcm videobuf2_core microcode videodev
> bnep iwlwifi videobuf2_vmalloc snd_seq_midi psmouse videobuf2_memops
> snd_rawmidi rfcomm pcspkr snd_seq_midi_event serio_raw snd_seq bluetooth
> mac80211 snd_timer snd_seq_device i915 drm_kms_helper cfg80211 drm
> toshiba_acpi snd sparse_keymap soundcore wmi i2c_algo_bit toshiba_bluetooth
> snd_page_alloc parport_pc mei video mac_hid lpc_ich ppdev nfsd nfs lockd
> fscache auth_rpcgss nfs_acl sunrpc lp parport e1000e ahci libahci [last
> unloaded: sdhci]
>   [26932.384421] Pid: 24262, comm: kworker/u:2 Tainted: G        W
>  3.5.0-26-generic #40-Ubuntu
>   [26932.384422] Call Trace:
>   [26932.384431]  [<ffffffff81051bef>] warn_slowpath_common+0x7f/0xc0
>   [26932.384436]  [<ffffffff81051c4a>] warn_slowpath_null+0x1a/0x20
>   [26932.384451]  [<ffffffffa02d32e6>] gen6_enable_rps+0x706/0x710 [i915]
>   [26932.384466]  [<ffffffffa02bf3f6>] intel_modeset_init_hw+0x66/0xa0
> [i915]
>   [26932.384476]  [<ffffffffa02954b4>] i915_reset+0x1a4/0x6e0 [i915]
>   [26932.384482]  [<ffffffff8101257b>] ? __switch_to+0x12b/0x420
>   [26932.384493]  [<ffffffffa029a943>] i915_error_work_func+0xc3/0x110
> [i915]
>   [26932.384500]  [<ffffffff8107097a>] process_one_work+0x12a/0x420
>   [26932.384511]  [<ffffffffa029a880>] ? gen6_pm_rps_work+0xe0/0xe0 [i915]
>   [26932.384514]  [<ffffffff8107152e>] worker_thread+0x12e/0x2f0
>   [26932.384517]  [<ffffffff81071400>] ? manage_workers.isra.26+0x200/0x200
>   [26932.384521]  [<ffffffff81076023>] kthread+0x93/0xa0
>   [26932.384526]  [<ffffffff8168a3e4>] kernel_thread_helper+0x4/0x10
>   [26932.384531]  [<ffffffff81075f90>] ?
> kthread_freezable_should_stop+0x70/0x70
>   [26932.384534]  [<ffffffff8168a3e0>] ? gs_change+0x13/0x13
>   [26932.384536] ---[ end trace 59c6162fdfcbffef ]---
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 12.10
>   Package: linux-image-3.5.0-26-generic 3.5.0-26.40
>   ProcVersionSignature: Ubuntu 3.5.0-26.40-generic 3.5.7.6
>   Uname: Linux 3.5.0-26-generic x86_64
>   ApportVersion: 2.6.1-0ubuntu10
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  luca       2084 F.... pulseaudio
>   CheckboxSubmission: f8b82cd9bc23fe075e5068a9824afda5
>   CheckboxSystem: b1865df84255b8716d3bcc269ff410d1
>   Date: Sat Mar  2 22:25:14 2013
>   HibernationDevice: RESUME=UUID=20fe6da8-7d68-4660-953f-6e4ae1d348a7
>   InstallationDate: Installed on 2012-04-26 (310 days ago)
>   InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
> (20120425)
>   MachineType: TOSHIBA SATELLITE Z830
>   MarkForUpload: True
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic
> root=UUID=36929bf3-a158-44d9-a80d-3adac2840fa8 ro quiet splash
> acpi_backlight=vendor i915.i915_enable_rc6=1 i915.lvds_downclock=1
> vt.handoff=7
>   RelatedPackageVersions:
>    linux-restricted-modules-3.5.0-26-generic N/A
>    linux-backports-modules-3.5.0-26-generic  N/A
>    linux-firmware                            1.95
>   SourcePackage: linux
>   UpgradeStatus: Upgraded to quantal on 2012-10-28 (125 days ago)
>   dmi.bios.date: 07/31/2012
>   dmi.bios.vendor: TOSHIBA
>   dmi.bios.version: Version 1.70
>   dmi.board.asset.tag: 0000000000
>   dmi.board.name: Portable PC
>   dmi.board.vendor: TOSHIBA
>   dmi.board.version: Version A0
>   dmi.chassis.asset.tag: 0000000000
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: TOSHIBA
>   dmi.chassis.version: Version 1.0
>   dmi.modalias:
> dmi:bvnTOSHIBA:bvrVersion1.70:bd07/31/2012:svnTOSHIBA:pnSATELLITEZ830:pvrPT22LE-00300GGR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
>   dmi.product.name: SATELLITE Z830
>   dmi.product.version: PT22LE-00300GGR
>   dmi.sys.vendor: TOSHIBA
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1140716/+subscriptions
>