Xorg freeze

[cement_head]

Laptop is suspended with no external monitor. Upon connecting a VGA external monitor and opening lid (resume) laptop resumes and everything is okay. Attempting to connect bluetooth mouse causes immediate freeze of GUI and machine. Cannot drop down into low run mode (CTL-ALT-F6). Hard reset required.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.1-0ubuntu2
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
CurrentDesktop: Unity
Date: Mon Apr 25 09:29:17 2016
DistUpgraded: 2016-04-21 09:24:43,092 DEBUG icon theme changed, re-reading
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GpuHangFrequency: Very infrequently
GraphicsCard:
 Intel Corporation Sky Lake Integrated Graphics [8086:1916] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Skylake Integrated Graphics [1558:2425]
InstallationDate: Installed on 2015-12-14 (132 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 5986:068f Acer, Inc
 Bus 001 Device 006: ID 8087:0a2b Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: System76, Inc. Lemur
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=578caace-46fb-497c-9b81-f99b65518a27 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: Upgraded to xenial on 2016-04-21 (4 days ago)
dmi.bios.date: 11/29/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.05.06RS76
dmi.board.asset.tag: Tag 12345
dmi.board.name: Lemur
dmi.board.vendor: System76, Inc.
dmi.board.version: lemu6
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.06RS76:bd11/29/2015:svnSystem76,Inc.:pnLemur:pvrlemu6:rvnSystem76,Inc.:rnLemur:rvrlemu6:cvnSystem76,Inc.:ct10:cvrN/A:
dmi.product.name: Lemur
dmi.product.version: lemu6
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Mon Apr 25 09:07:39 2016
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 1094
 vendor LGD
xserver.version: 2:1.18.3-1ubuntu2

[cement_head (andorjkiss)]

Update: Has nothing to do with Bluetooth. Has everything to do with plugging in a VGA cable while machine is suspended and then opening lid (resuming). Causes freeze. Opening lid first and then connecting VGA cable does not elicit freeze.

[cement_head (andorjkiss)]

Here's (I think) the relevant section of the Kernel Log:

May 3 09:07:57 andor-Lemur kernel: [ 2.829933] ------------[ cut here ]------------
May 3 09:07:57 andor-Lemur kernel: [ 2.829952] WARNING: CPU: 3 PID: 24 at /build/linux-yplzxd/linux-4.4.0/ubuntu/i915/intel_pm.c:3572 skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
May 3 09:07:57 andor-Lemur kernel: [ 2.829954] WARN_ON(!wm_changed)
May 3 09:07:57 andor-Lemur kernel: [ 2.829954] Modules linked in: autofs4 mmc_block rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit drm_kms_helper syscopyarea sysfillrect psmouse sysimgblt fb_sys_fops drm r8169 ahci rtsx_pci mii libahci wmi video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid fjes
May 3 09:07:57 andor-Lemur kernel: [ 2.829981] CPU: 3 PID: 24 Comm: kworker/3:0 Not tainted 4.4.0-22-generic #38-Ubuntu
May 3 09:07:57 andor-Lemur kernel: [ 2.829982] Hardware name: System76, Inc. Lemur /Lemur , BIOS 1.05.06RS76 11/29/2015
May 3 09:07:57 andor-Lemur kernel: [ 2.829987] Workqueue: events output_poll_execute [drm_kms_helper]
May 3 09:07:57 andor-Lemur kernel: [ 2.829988] 0000000000000286 00000000ab9642dc ffff880460d73950 ffffffff813e9c73
May 3 09:07:57 andor-Lemur kernel: [ 2.829990] ffff880460d73998 ffffffffc028ac70 ffff880460d73988 ffffffff81080fb2
May 3 09:07:57 andor-Lemur kernel: [ 2.829991] ffff880460ed6000 ffff88045aa99d9c ffff880460ed5000 ffff88045ae7fb78
May 3 09:07:57 andor-Lemur kernel: [ 2.829992] Call Trace:
May 3 09:07:57 andor-Lemur kernel: [ 2.829996] [<ffffffff813e9c73>] dump_stack+0x63/0x90
May 3 09:07:57 andor-Lemur kernel: [ 2.829999] [<ffffffff81080fb2>] warn_slowpath_common+0x82/0xc0
May 3 09:07:57 andor-Lemur kernel: [ 2.830000] [<ffffffff8108104c>] warn_slowpath_fmt+0x5c/0x80
May 3 09:07:57 andor-Lemur kernel: [ 2.830010] [<ffffffffc01bc5cc>] skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830019] [<ffffffffc01bc766>] skl_update_wm+0x186/0x5f0 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830033] [<ffffffffc024836f>] ? intel_ddi_enable_transcoder_func+0x17f/0x260 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830046] [<ffffffffc01c048e>] intel_update_watermarks+0x1e/0x30 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830065] [<ffffffffc022c401>] haswell_crtc_enable+0x321/0x8c0 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830084] [<ffffffffc0218a8e>] ? intel_finish_crtc_commit+0xe/0x10 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830090] [<ffffffffc0172314>] ? drm_atomic_helper_commit_planes_on_crtc+0x154/0x270 [drm_kms_helper]
May 3 09:07:57 andor-Lemur kernel: [ 2.830109] [<ffffffffc0228dad>] intel_atomic_commit+0x5dd/0xdb0 [i915_bpo]
May 3 09:07:57 andor-Lemur kernel: [ 2.830126] [<ffffffffc00cd80e>] ? drm_atomic_check_only+0x18e/0x590 [drm]
May 3 09:07:57 andor-Lemur kernel: [ 2.830138] [<ffffffffc00cdc47>] drm_atomic_commit+0x37/0x60 [drm]
May 3 09:07:57 andor-Lemur kernel: [ 2.830144] [<ffffffffc01735df>] restore_fbdev_mode+0x22f/0x260 [drm_kms_helper]
May 3 09:07:57 andor-Lemur kernel: [ 2.83015...

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to review all reported bugs in a timely manner.

Ubuntu 16.04 (xenial) reached end-of-standard-support on April 29, 2021.

I'm setting the status of this bug to 'Incomplete' as it's not seen any activity for some time. If this bug report has any relevance when using a currently maintained release of Ubuntu then please let us know which one(s) otherwise this bug report can be left to expire in approximately 60 days time.

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]