[Intel-gfx] [REGRESSION] Occasional Flickering with Linux 4.6.0-rc* on Scree connected to eDP

[Arnd Hannemann]

Hi,

probably a duplicate of
https://bugs.freedesktop.org/show_bug.cgi?id=95124

Sorry for the noise.

Best regards
Arnd

Am 04.05.2016 um 11:45 schrieb Arnd Hannemann:
> 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.
> 
> Best Regards
> Arnd
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