Bug 76441

Summary:	[gma500] flicker when using psbdrmfb
Product:	Drivers	Reporter:	Andreas (andreas.thalhammer)
Component:	Video(DRI - Intel)	Assignee:	Patrik Jakobsson (patrik.r.jakobsson)
Status:	NEW ---
Severity:	high	CC:	internet_krasnodar, szg00000
Priority:	P3
Hardware:	i386
OS:	Linux
Kernel Version:	3.13	Subsystem:
Regression:	No	Bisected commit-id:

Description Andreas 2014-05-18 18:43:18 UTC

I'm running a netbook with an Atom Z5x0 CPU and a US15W chipset. The graphics controller is called GMA500. On Windows XP and 7 (32bit) I need a special driver from Intel, as this GMA500 seems to be very different from the others sharing the same name.

A few days ago I installed Linux on it and found that the screen was flickering. According to dmesg the system is using video=psbdrmfb. I tried to boot without starting a graphical window manager and on the text console I see the same thing: flickering.

I am using kernel 3.13.

With video=vesafb (I had to remove gma500_gfx.ko to get vesafb working) the flickering is gone -- but it is very slow and resolution is wrong.

Searching for a solution I found that there are various reposts of the same problem: please try "gma500_gfx flicker" as search query in Google.

This seems to be this very bug:
https://bugs.freedesktop.org/show_bug.cgi?id=78562

Comment 1 Andreas 2018-02-08 21:54:40 UTC

Is this patch in the kernel?
https://bugs.freedesktop.org/show_bug.cgi?id=78562#c17

I don't have immediate access to this netbook right now, but I can test this should it be requested...