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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

I built the next test kernel up to the following commit:
bef2c7bd578e91c9c10983e0c15c4501127b77ca

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1492632

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

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https://bugs.launchpad.net/bugs/1492632

Title:
  [Ubuntu 15.10] Intel Display i915 driver crashes, Asus Zenbook 303LA

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Wily:
  In Progress

Bug description:
  My Asus Zenbook 303LA (UX303LA-DS51T) eventually gets a corrupted
  display. Everything repeatedly shifts horizontally. I found the
  following in the kernel log. The corruption does not have a 1:1
  relation with the occurrence of the error however.

  ===
  [   99.275807] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in base.adjusted_mode.crtc_clock (expected 138780, found 92519)
  [   99.275810] ------------[ cut here ]------------
  [   99.275822] WARNING: CPU: 1 PID: 909 at /build/linux-4dBub_/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12324 check_crtc_state+0x2c5/0x440 [i915]()
  [   99.275823] pipe state doesn't match!
  [   99.275824] Modules linked in: bnep arc4 asus_nb_wmi asus_wmi sparse_keymap intel_rapl x86_pkg_temp_thermal iwlmvm intel_powerclamp coretemp mac80211 snd_soc_rt5640 kvm_intel snd_soc_rl6231 snd_soc_core kvm uv
  cvideo snd_compress ac97_bus snd_hda_codec_hdmi snd_pcm_dmaengine snd_hda_codec_conexant videobuf2_vmalloc snd_hda_codec_generic snd_seq_midi iwlwifi videobuf2_memops btusb snd_seq_midi_event serio_raw videobuf2_
  core snd_rawmidi btrtl btbcm snd_hda_intel v4l2_common btintel videodev snd_hda_codec cfg80211 lpc_ich bluetooth snd_hda_core input_leds joydev mei_me hid_multitouch media snd_hwdep mei shpchp snd_pcm processor_t
  hermal_device intel_soc_dts_iosf iosf_mbi snd_seq snd_seq_device snd_timer snd soundcore snd_soc_sst_acpi acpi_pad dw_dmac acpi_als int3402_thermal i2c_designware_platform dw_dmac_core
  [   99.275856]  kfifo_buf i2c_designware_core 8250_dw spi_pxa2xx_platform industrialio int3400_thermal int340x_thermal_zone mac_hid acpi_thermal_rel sunrpc parport_pc ppdev lp parport autofs4 jitterentropy_rng dr
  bg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid psmouse crct10dif_pclmul crc32_pclmul ghash_clmulni_intel i915 aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i2c_algo_bit drm_k
  ms_helper ahci drm libahci wmi sdhci_acpi video sdhci i2c_hid hid
  [   99.275877] CPU: 1 PID: 909 Comm: Xorg Not tainted 4.2.0-7-generic #7-Ubuntu
  [   99.275878] Hardware name: ASUSTeK COMPUTER INC. UX303LAB/UX303LAB, BIOS UX303LAB.203 12/11/2014
  [   99.275879]  ffffffffc02ce1e8 ffff8800d3a977e8 ffffffff817b0465 0000000000000000
  [   99.275881]  ffff8800d3a97838 ffff8800d3a97828 ffffffff81076536 ffff8800d3a97858
  [   99.275883]  ffff8800d3a978c0 ffff8800d374f800 0000000000000001 ffff8800d374fb50
  [   99.275885] Call Trace:
  [   99.275890]  [<ffffffff817b0465>] dump_stack+0x45/0x57
  [   99.275893]  [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0
  [   99.275895]  [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50
  [   99.275906]  [<ffffffffc0262068>] ? intel_pipe_config_compare+0xb08/0xc60 [i915]
  [   99.275916]  [<ffffffffc0262485>] check_crtc_state+0x2c5/0x440 [i915]
  [   99.275929]  [<ffffffffc0275f3e>] intel_modeset_check_state+0x20e/0x6b0 [i915]
  [   99.275940]  [<ffffffffc02770e7>] intel_crtc_set_config+0x4c7/0x580 [i915]
  [   99.275951]  [<ffffffffc008b915>] ? drm_mode_create+0x25/0x60 [drm]
  [   99.275959]  [<ffffffffc0085036>] drm_mode_set_config_internal+0x66/0x100 [drm]
  [   99.275967]  [<ffffffffc00895f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm]
  [   99.275973]  [<ffffffffc007a365>] drm_ioctl+0x125/0x610 [drm]
  [   99.275980]  [<ffffffffc0089250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
  [   99.275983]  [<ffffffff811fffd5>] do_vfs_ioctl+0x285/0x470
  [   99.275986]  [<ffffffff8108190f>] ? recalc_sigpending+0x1f/0x60
  [   99.275988]  [<ffffffff810828b2>] ? __set_task_blocked+0x32/0x70
  [   99.275990]  [<ffffffff81200239>] SyS_ioctl+0x79/0x90
  [   99.275992]  [<ffffffff817b6cf2>] entry_SYSCALL_64_fastpath+0x16/0x75
  [   99.275994] ---[ end trace 6172e2f40143dd37 ]---
  ===

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-7-generic 4.2.0-7.7
  ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
  Uname: Linux 4.2.0-7-generic x86_64
  ApportVersion: 2.18-0ubuntu9
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  peter      1151 F.... pulseaudio
   /dev/snd/controlC1:  peter      1151 F.... pulseaudio
  Date: Sat Sep  5 15:15:04 2015
  InstallationDate: Installed on 2015-07-05 (62 days ago)
  InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150704)
  MachineType: ASUSTeK COMPUTER INC. UX303LAB
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-7-generic root=UUID=9b60dccb-1ce9-4ddf-82f6-cc03b3c01b5c ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-7-generic N/A
   linux-backports-modules-4.2.0-7-generic  N/A
   linux-firmware                           1.147
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/11/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX303LAB.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX303LAB
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LAB.203:bd12/11/2014:svnASUSTeKCOMPUTERINC.:pnUX303LAB:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LAB:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX303LAB
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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