Joined: 14 Dec 2005
|Posted: Mon Apr 01, 2019 7:41 pm Post subject: [Solved] Dark screen with radeon graphics since kernel 4.19
since I updated from kernel 4.14 to 4.19 (gentoo-sources-4.19.27-r1) I get a dark screen on my laptop when booting as soon as udev starts.
It seems that the screen does not turn completely black but the backlight is off, when X starts you can spot a _very_ dark password input field, and it is possible to log in.
The interesting thing is, when I wait until the computer suspends and resume after that, the backlight turns on and then it works like usual.
So here's my graphics card:
00:01.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 6290] [1002:9807]
and my kernel config https://pastebin.com/STg4XBdL and dmesg output https://pastebin.com/UNNmaDwJ
I solved the problem by passing
as kernel parameter.