Bug 1310252
| Summary: | kernel-4.4.2-300.fc23.x86_64 causes screen flickering | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | H.J. Lu <hongjiu.lu> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 23 | CC: | gansalmon, itamar, jonathan, jpopelka, kernel-maint, labbott, madhu.chinakonda, mchehab, mrunge, ricardouza |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-03-12 02:26:51 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
H.J. Lu
2016-02-19 21:07:51 UTC
It happens on both Haswell and Skylake machines. Thee are subtle flickers of bottom screen area, perceivable during UI or related workload instances. For me, I have screen blanks for 1-3 seconds on both screens attached to a docking station (T450s), blanks occur independend from each other, nothing is found in the logs here. This seems a dup of https://bugs.freedesktop.org/show_bug.cgi?id=93892 and fixed by From e2e407dc093f530b771ee8bf8fe1be41e3cea8b3 Mon Sep 17 00:00:00 2001 From: Matt Roper <matthew.d.roper> Date: Mon, 8 Feb 2016 11:05:28 -0800 Subject: [PATCH] drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2) Due to our lack of two-step watermark programming, our driver has historically pretended that the cursor plane is always on for the purpose of watermark calculations; this helps avoid serious flickering when the cursor turns off/on (e.g., when the user moves the mouse pointer to a different screen). That workaround was accidentally dropped as we started working toward atomic watermark updates. Since we still aren't quite there yet with two-stage updates, we need to resurrect the workaround and treat the cursor as always active. v2: Tweak cursor width calculations slightly to more closely match the logic we used before the atomic overhaul began. (Ville) The last comment there said it wasn't actually fixed so I didn't pull it into 4.4.3. Did anyone else confirm if it fixed the flickering? kernel-4.4.4-200.fc22 has been submitted as an update to Fedora 22. https://bodhi.fedoraproject.org/updates/FEDORA-2016-746bb5851d kernel-4.4.4-301.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-e6cfaff4b1 kernel-4.4.4-200.fc22 has been pushed to the Fedora 22 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-746bb5851d kernel-4.4.4-301.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-e6cfaff4b1 *** Bug 1316538 has been marked as a duplicate of this bug. *** kernel-4.4.4-301.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. kernel-4.4.4-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. |