Launchpad has imported 4 comments from the remote bug at https://bugs.freedesktop.org/show_bug.cgi?id=94593.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2016-03-17T15:01:04+00:00 Thomas Bonfort wrote: I'm experiencing what seems to be random flickering (not related to hiding cursor as seen on #93945). https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1554613 contains my bisection of the issue. [359d2243117a79599435141fda0047d01ef324e8] drm/i915: Update DRIVER_DATE to 20160314 from drm-intel-next still exhibits the issue Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1554613/comments/16 ------------------------------------------------------------------------ On 2016-03-17T19:55:30+00:00 Thomas Bonfort wrote: I've bisected this down with relative confidence (had to mark commits from 4.3 as artificially good as the system was not usable with this older version of the kernel): 921ec285a6589cf3beb7f56a70744f75b09349f8 is the first bad commit commit 921ec285a6589cf3beb7f56a70744f75b09349f8 Author: Rodrigo Vivi <rodrigo.v...@intel.com> Date: Wed Nov 18 11:21:12 2015 -0800 Here is the full bisect log: git bisect start '--' 'drivers/gpu/drm/i915' 'include/drm/' 'include/uapi/drm/' # bad: [359d2243117a79599435141fda0047d01ef324e8] drm/i915: Update DRIVER_DATE to 20160314 git bisect bad 359d2243117a79599435141fda0047d01ef324e8 # good: [1cb8570bf04ab12a03c31c397a4d158f24895d9c] Linux 4.4.2 git bisect good 1cb8570bf04ab12a03c31c397a4d158f24895d9c # good: [afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc] Linux 4.4 git bisect good afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc # bad: [2a33d93486f247924e46b5402b8ffb43d1b9b38c] drm/i915/bios: add support for MIPI sequence block v3 git bisect bad 2a33d93486f247924e46b5402b8ffb43d1b9b38c # bad: [013d37520af735fd55f78e33edf55cc6fb3858eb] drm/i915: Introduce bdw_{update,enable,disable}_pipe_irq() git bisect bad 013d37520af735fd55f78e33edf55cc6fb3858eb # good: [b1a14c6e40413f833dadc1d23b43c530f4b8e381] drm/i915: refactor stepping info retrieval git bisect good b1a14c6e40413f833dadc1d23b43c530f4b8e381 # good: [78e0d2e3477aa3e8bdac70698ddd2aad020016d1] drm/i915: Store DVO SRCDIM register offset under intel_dvo_device git bisect good 78e0d2e3477aa3e8bdac70698ddd2aad020016d1 # good: [a6d09186fa27dea720ddd668a814cb6e4f78d53b] drm/i915: Stuff rotation params into view union git bisect good a6d09186fa27dea720ddd668a814cb6e4f78d53b # good: [ca1a95334ddaf624c1b0424113fe9b8100da1614] drm/i915: Remove duplicated dpcd write on hsw_psr_enable_sink. git bisect good ca1a95334ddaf624c1b0424113fe9b8100da1614 # bad: [9bbc8258ae5914af1986561767d971417cee7a28] drm/i915: Check for underruns after crtc disable git bisect bad 9bbc8258ae5914af1986561767d971417cee7a28 # bad: [05eec3c2709d8966cbfcc7cd395f37889c492678] drm/i915: Remove PSR Perf Counter for SKL+ git bisect bad 05eec3c2709d8966cbfcc7cd395f37889c492678 # bad: [bb929cbc1f58c72eaf7981281dbb024ad92ef24d] drm/i915: PSR: Mask LPSP hw tracking back again. git bisect bad bb929cbc1f58c72eaf7981281dbb024ad92ef24d # bad: [921ec285a6589cf3beb7f56a70744f75b09349f8] drm/i915: PSR: Let's rely more on frontbuffer tracking. git bisect bad 921ec285a6589cf3beb7f56a70744f75b09349f8 # first bad commit: [921ec285a6589cf3beb7f56a70744f75b09349f8] drm/i915: PSR: Let's rely more on frontbuffer tracking. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1554613/comments/17 ------------------------------------------------------------------------ On 2016-04-04T02:52:48+00:00 Christopher M. Penalver wrote: Could someone at Intel please assign this to offending commit committer Rodrigo Vivi (or request he assign himself)? Unfortunately, bugzilla won't allow one to either assign him or CC as per error message: Assignee: rodrigo.vivi AT intel DOT com did not match anything Also, this seems strange one cannot assign him given Intel's documentation states to report here as per https://01.org/linuxgraphics/documentation/how-report-bugs , but yet bugzilla cannot reach the appropriate developer? Despite this, increasing importance, given it's bisected, reproducible for a few folks as reported downstream, and reproducible in latest drm- intel-nightly. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1554613/comments/30 ------------------------------------------------------------------------ On 2016-04-04T08:49:51+00:00 Jani-nikula wrote: (In reply to Christopher M. Penalver from comment #2) > Could someone at Intel please assign this to offending commit committer > Rodrigo Vivi (or request he assign himself)? > > Unfortunately, bugzilla won't allow one to either assign him or CC as per > error message: > Assignee: > rodrigo.vivi AT intel DOT com did not match anything Done now, it's just that he's registered here with another email address. Writing just parts of the name will show up alternatives. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1554613/comments/35 ** Changed in: linux Status: Unknown => In Progress ** Changed in: linux Importance: Unknown => High -- 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/1554613 Title: screen flickering on XPS13 9350 Status in Linux: In Progress Status in linux package in Ubuntu: Triaged Bug description: see LP: #1552304 does not affect 4.4.0-8 affects 4.4.0-9 to 4.4.0-16 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-generic 4.4.0.11.12 ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tbonfort 1498 F.... pulseaudio CurrentDesktop: KDE Date: Tue Mar 8 09:57:12 2016 HibernationDevice: RESUME=UUID=3248e0d7-0dac-4ccc-8982-b5ac5ce6ed5e InstallationDate: Installed on 2016-01-07 (61 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 0c45:670c Microdia Bus 001 Device 002: ID 0a5c:6412 Broadcom Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 13 9350 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic root=UUID=757547b8-d0e4-4eb8-8afd-920b743f99a4 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-8-generic N/A linux-backports-modules-4.4.0-8-generic N/A linux-firmware 1.156 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-02-28 (9 days ago) dmi.bios.date: 01/08/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.3 dmi.board.name: 07TYC2 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd01/08/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn07TYC2:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 13 9350 dmi.sys.vendor: Dell Inc. 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