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[Bug 1522094] Re: WARNING: CPU: 0 PID: 233 at /build/linux-lts-vivid-pTjnAT/linux-lts-vivid-3.19.0/drivers/gpu/drm/i915/intel_crt.c:145 hsw_crt_pre_enable+0x7f/0x90 [i915]()

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apport information

** Tags added: apport-collected trusty

** Description changed:

  When I connect a monitor the VGA port on the laptop - this is found in
  dmesg, and some of the kernel modules linked in become unstable [ btrfs
  for instance, if it's in use].
  
  [    2.962400] ------------[ cut here ]------------
  [    2.962424] WARNING: CPU: 0 PID: 233 at /build/linux-lts-vivid-pTjnAT/linux-lts-vivid-3.19.0/drivers/gpu/drm/i915/intel_crt.c:145 hsw_crt_pre_enable+0x7f/0x90 [i915]()
  [    2.962425] SPLL already enabled
  [    2.962426] Modules linked in: uas usb_storage hid_generic usbhid hid i915 psmouse i2c_algo_bit e1000e drm_kms_helper ahci libahci sdhci_pci drm ptp pps_core pata_acpi wmi sdhci_acpi video sdhci
  [    2.962437] CPU: 0 PID: 233 Comm: plymouthd Not tainted 3.19.0-37-generic #42~14.04.1-Ubuntu
  [    2.962438] Hardware name: Dell Inc. Latitude E6540/0PXPYJ, BIOS A15 05/19/2015
  [    2.962439]  ffffffffc02fd7f8 ffff880220d23ab8 ffffffff817af92b 0000000000003a7a
  [    2.962440]  ffff880220d23b08 ffff880220d23af8 ffffffff81074e0a 0000000000000046
  [    2.962442]  ffff880035fb0000 ffff88003615eb60 ffff880035f8f400 ffff88003615e800
  [    2.962444] Call Trace:
  [    2.962449]  [<ffffffff817af92b>] dump_stack+0x45/0x57
  [    2.962452]  [<ffffffff81074e0a>] warn_slowpath_common+0x8a/0xc0
  [    2.962453]  [<ffffffff81074e86>] warn_slowpath_fmt+0x46/0x50
  [    2.962464]  [<ffffffffc02b601f>] hsw_crt_pre_enable+0x7f/0x90 [i915]
  [    2.962475]  [<ffffffffc02a1a7c>] haswell_crtc_enable+0x3fc/0xaf0 [i915]
  [    2.962485]  [<ffffffffc029f1a2>] __intel_set_mode+0x872/0xc60 [i915]
  [    2.962495]  [<ffffffffc02a5af2>] intel_crtc_set_config+0x9e2/0xf60 [i915]
  [    2.962506]  [<ffffffffc010382f>] drm_mode_set_config_internal+0x6f/0x110 [drm]
  [    2.962511]  [<ffffffffc019e5c8>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
  [    2.962515]  [<ffffffffc01a04e9>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
  [    2.962525]  [<ffffffffc02b31ee>] intel_fbdev_restore_mode+0x1e/0x50 [i915]
  [    2.962536]  [<ffffffffc02d787e>] i915_driver_lastclose+0xe/0x20 [i915]
  [    2.962541]  [<ffffffffc00f6c4e>] drm_lastclose+0x2e/0x130 [drm]
  [    2.962546]  [<ffffffffc00f7088>] drm_release+0x338/0x540 [drm]
  [    2.962549]  [<ffffffff811ee077>] __fput+0xe7/0x220
  [    2.962551]  [<ffffffff811ee1fe>] ____fput+0xe/0x10
  [    2.962553]  [<ffffffff81091e3c>] task_work_run+0xac/0xd0
  [    2.962556]  [<ffffffff81015007>] do_notify_resume+0x97/0xb0
  [    2.962558]  [<ffffffff817b762f>] int_signal+0x12/0x17
  [    2.962559] ---[ end trace b6b778d930eaeda7 ]---
  
  This is the lts-vivid kernel.  downgrading to the lts-utopic kernel fixes the issue.
  I tried the wily-lts, same issue.
  
  I've also tried to recent kernels in http://kernel.ubuntu.com/~kernel-
  ppa :
  
  linux-image-4.3.0-040300-generic_4.3.0-040300 is still broken
  
- linux-image-4.4.0-040400rc3-generic_4.4.0-040400rc3.201511300321   works
- fine!  :)
+ linux-image-4.4.0-040400rc3-generic_4.4.0-040400rc3.201511300321   works fine!  :)
+ --- 
+ ApportVersion: 2.14.1-0ubuntu3.19
+ Architecture: amd64
+ AudioDevicesInUse:
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  jcat       2559 F.... pulseaudio
+  /dev/snd/controlC1:  jcat       2559 F.... pulseaudio
+ CurrentDesktop: GNOME
+ DistroRelease: Ubuntu 14.04
+ HibernationDevice: RESUME=UUID=b338325d-c293-4b5b-ab0a-542a7f02236f
+ InstallationDate: Installed on 2015-11-25 (8 days ago)
+ InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
+ MachineType: Dell Inc. Latitude E6540
+ NonfreeKernelModules: fglrx
+ Package: linux (not installed)
+ ProcFB: 0 inteldrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-39-generic.efi.signed root=UUID=8c468c94-323c-4526-b3a2-e1eddacbed42 ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 3.19.0-39.44~14.04.1-generic 3.19.8-ckt9
+ RelatedPackageVersions:
+  linux-restricted-modules-3.19.0-39-generic N/A
+  linux-backports-modules-3.19.0-39-generic  N/A
+  linux-firmware                             1.127.19
+ Tags:  trusty
+ Uname: Linux 3.19.0-39-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
+ _MarkForUpload: True
+ dmi.bios.date: 05/19/2015
+ dmi.bios.vendor: Dell Inc.
+ dmi.bios.version: A15
+ dmi.board.name: 0PXPYJ
+ dmi.board.vendor: Dell Inc.
+ dmi.board.version: A00
+ dmi.chassis.type: 9
+ dmi.chassis.vendor: Dell Inc.
+ dmi.modalias: dmi:bvnDellInc.:bvrA15:bd05/19/2015:svnDellInc.:pnLatitudeE6540:pvr01:rvnDellInc.:rn0PXPYJ:rvrA00:cvnDellInc.:ct9:cvr:
+ dmi.product.name: Latitude E6540
+ dmi.product.version: 01
+ dmi.sys.vendor: Dell Inc.

** Attachment added: "AlsaInfo.txt"
   https://bugs.launchpad.net/bugs/1522094/+attachment/4529546/+files/AlsaInfo.txt

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https://bugs.launchpad.net/bugs/1522094

Title:
  WARNING: CPU: 0 PID: 233 at /build/linux-lts-vivid-pTjnAT/linux-lts-
  vivid-3.19.0/drivers/gpu/drm/i915/intel_crt.c:145
  hsw_crt_pre_enable+0x7f/0x90 [i915]()

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When I connect a monitor the VGA port on the laptop - this is found in
  dmesg, and some of the kernel modules linked in become unstable [
  btrfs for instance, if it's in use].

  [    2.962400] ------------[ cut here ]------------
  [    2.962424] WARNING: CPU: 0 PID: 233 at /build/linux-lts-vivid-pTjnAT/linux-lts-vivid-3.19.0/drivers/gpu/drm/i915/intel_crt.c:145 hsw_crt_pre_enable+0x7f/0x90 [i915]()
  [    2.962425] SPLL already enabled
  [    2.962426] Modules linked in: uas usb_storage hid_generic usbhid hid i915 psmouse i2c_algo_bit e1000e drm_kms_helper ahci libahci sdhci_pci drm ptp pps_core pata_acpi wmi sdhci_acpi video sdhci
  [    2.962437] CPU: 0 PID: 233 Comm: plymouthd Not tainted 3.19.0-37-generic #42~14.04.1-Ubuntu
  [    2.962438] Hardware name: Dell Inc. Latitude E6540/0PXPYJ, BIOS A15 05/19/2015
  [    2.962439]  ffffffffc02fd7f8 ffff880220d23ab8 ffffffff817af92b 0000000000003a7a
  [    2.962440]  ffff880220d23b08 ffff880220d23af8 ffffffff81074e0a 0000000000000046
  [    2.962442]  ffff880035fb0000 ffff88003615eb60 ffff880035f8f400 ffff88003615e800
  [    2.962444] Call Trace:
  [    2.962449]  [<ffffffff817af92b>] dump_stack+0x45/0x57
  [    2.962452]  [<ffffffff81074e0a>] warn_slowpath_common+0x8a/0xc0
  [    2.962453]  [<ffffffff81074e86>] warn_slowpath_fmt+0x46/0x50
  [    2.962464]  [<ffffffffc02b601f>] hsw_crt_pre_enable+0x7f/0x90 [i915]
  [    2.962475]  [<ffffffffc02a1a7c>] haswell_crtc_enable+0x3fc/0xaf0 [i915]
  [    2.962485]  [<ffffffffc029f1a2>] __intel_set_mode+0x872/0xc60 [i915]
  [    2.962495]  [<ffffffffc02a5af2>] intel_crtc_set_config+0x9e2/0xf60 [i915]
  [    2.962506]  [<ffffffffc010382f>] drm_mode_set_config_internal+0x6f/0x110 [drm]
  [    2.962511]  [<ffffffffc019e5c8>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
  [    2.962515]  [<ffffffffc01a04e9>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
  [    2.962525]  [<ffffffffc02b31ee>] intel_fbdev_restore_mode+0x1e/0x50 [i915]
  [    2.962536]  [<ffffffffc02d787e>] i915_driver_lastclose+0xe/0x20 [i915]
  [    2.962541]  [<ffffffffc00f6c4e>] drm_lastclose+0x2e/0x130 [drm]
  [    2.962546]  [<ffffffffc00f7088>] drm_release+0x338/0x540 [drm]
  [    2.962549]  [<ffffffff811ee077>] __fput+0xe7/0x220
  [    2.962551]  [<ffffffff811ee1fe>] ____fput+0xe/0x10
  [    2.962553]  [<ffffffff81091e3c>] task_work_run+0xac/0xd0
  [    2.962556]  [<ffffffff81015007>] do_notify_resume+0x97/0xb0
  [    2.962558]  [<ffffffff817b762f>] int_signal+0x12/0x17
  [    2.962559] ---[ end trace b6b778d930eaeda7 ]---

  This is the lts-vivid kernel.  downgrading to the lts-utopic kernel fixes the issue.
  I tried the wily-lts, same issue.

  I've also tried to recent kernels in http://kernel.ubuntu.com/~kernel-
  ppa :

  linux-image-4.3.0-040300-generic_4.3.0-040300 is still broken

  linux-image-4.4.0-040400rc3-generic_4.4.0-040400rc3.201511300321   works fine!  :)
  --- 
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jcat       2559 F.... pulseaudio
   /dev/snd/controlC1:  jcat       2559 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=b338325d-c293-4b5b-ab0a-542a7f02236f
  InstallationDate: Installed on 2015-11-25 (8 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  MachineType: Dell Inc. Latitude E6540
  NonfreeKernelModules: fglrx
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-39-generic.efi.signed root=UUID=8c468c94-323c-4526-b3a2-e1eddacbed42 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-39.44~14.04.1-generic 3.19.8-ckt9
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-39-generic N/A
   linux-backports-modules-3.19.0-39-generic  N/A
   linux-firmware                             1.127.19
  Tags:  trusty
  Uname: Linux 3.19.0-39-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/19/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A15
  dmi.board.name: 0PXPYJ
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA15:bd05/19/2015:svnDellInc.:pnLatitudeE6540:pvr01:rvnDellInc.:rn0PXPYJ:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6540
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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