| Summary: | laptop display blinks with kernel 4.6.0 (regression) | ||
|---|---|---|---|
| Product: | DRI | Reporter: | Christian Boltz <freedesktop> |
| Component: | DRM/Intel | Assignee: | Dhinakaran Pandiyan <dhinakaran.pandiyan> |
| Status: | CLOSED DUPLICATE | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> |
| Severity: | major | ||
| Priority: | medium | CC: | dhinakaran.pandiyan, intel-gfx-bugs, rodrigo.vivi, tiwai |
| Version: | XOrg git | ||
| Hardware: | Other | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | HSW | i915 features: | display/PSR |
This looks like https://bugs.freedesktop.org/show_bug.cgi?id=95176 Can you try 4.7-rc1? 4.7 rc1 sounds old ;-) I tried with kernel-default-4.7.rc3-1.1.g59af2d0.x86_64 from the openSUSE Kernel:HEAD repo. Unfortunately the laptop still blinks with 4.7 rc3 :-( *** This bug has been marked as a duplicate of bug 95176 *** Hmm.. Can you please try the patches - https://patchwork.freedesktop.org/series/8046/ . It seems to have worked as per - https://bugs.freedesktop.org/show_bug.cgi?id=95176 |
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I'm using openSUSE Tumbleweed (rolling release) and the kernel from Kernel:Stable (actually with two small AppArmor patches on top) so I already have kernel 4.6.0 instead of the 4.5.4 kernel in Tumbleweed. uname -r: 4.6.0-4.gaf7ce24-default uname -m: x86_64 I'm using a laptop (Tuxedo Book BC1703 with i7-4710MQ CPU) with intel graphics and two screens (laptop display + external screen via HDMI), but also see this bug when the external screen is disconnected. Kernel 4.6.0 causes the laptop screen to blink / flicker as soon as X starts (both login manager and in KDE) which makes the laptop display unusable and hurts in the eyes. This blinking is also reproducable with "X -retro". I can "fix" this by booting 4.5.4, so this is clearly a regression in 4.6.0. Also, booting kernel 4.6.0 with i915.enable_psr=0 stops the blinking. Reproducable: always (the blinking with 4.6.0 without boot parameters, and also the non-blinking with i915.enable_psr=0 or kernel 4.5.4) I initially reported this bug on https://bugzilla.opensuse.org/show_bug.cgi?id=981346 You can find logs (dmesg with drm.debug=0x0e), hardware details and some other details there. If you need more information, just ask ;-)