On Wed, 04 May 2016, Arnd Hannemann <arnd@xxxxxxxxxx> wrote: > Hi, > > with 4.6.0-rc4 and -rc6 kernel I experience occasional (every 1-2 Minutes) > on my laptop (thinkpad t440s) screen. > This flickering has not been there in 4.5. > Unfortunately the laptop does not boot with 4.6-rc1. > > The laptop screen is connected via eDP. I have two other monitors connected to the dock, > conected via DP. They do not show the flickering. > There is nothing in the log when the flickering occurs (drm.debug=14). > > Compared to 4.5.0 I see the following message with 4.6.0 after bootup: > > [ 5921.720651] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. > > I tried to increase graphics memory in bios, however, this did not seem to have any effect. > > Any idea how to track this down? I'm happy to provide more info. Does i915.enable_psr=0 module parameter fix it? If so, it's probably [1], otherwise please file a new bug at [2]. BR, Jani. [1] https://bugs.freedesktop.org/show_bug.cgi?id=95176 [2] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
