Arch Linux

Glaeqen

Member

Registered: 2016-08-10

Posts: 26

After latest update of ATI drivers & xorg, 2. monitor flickers

Hello fellow Archians,
After latest update of combo xf86-video-ati and xorg-server-{some_pkgs}, second monitor started to flicker awkwardly. Following downgrade rescued my PC from damnation:

[2018-05-20 21:21] [ALPM] downgraded xf86-video-ati (1:18.0.1-2 -> 1:18.0.1-1)
[2018-05-20 21:21] [ALPM] downgraded xorg-server-common (1.20.0-2 -> 1.19.6+13+gd0d1a694f-2)
[2018-05-20 21:21] [ALPM] downgraded xorg-server (1.20.0-2 -> 1.19.6+13+gd0d1a694f-2)
[2018-05-20 21:21] [ALPM] downgraded xorg-server-xvfb (1.20.0-2 -> 1.19.6+13+gd0d1a694f-2)

My setup is really specific and I'm afraid that no one will be able or would like to help me out
When it comes to flickering monitor I'm using DVI-VGA adapter which uses that one analog channel in DVI. Unfortunately, EDID gets broken in the way apparently - it doesn't see correct resolutions etc - so I force my way to victory creating new mode for monitor with following script

xrandr --newmode "samsungSyncmaster" 109.00  1280 1368 1496 1712  1024 1027 1034 1063 -hsync +vsync
xrandr --addmode DVI-0 samsungSyncmaster
xrandr --output DisplayPort-1 --off --output DisplayPort-0 --off --output DVI-0 --mode samsungSyncmaster --pos 1920x56 --rotate normal --output HDMI-0 --mode 1920x1080 --pos 0x0 --rotate normal

which gots evaluated within LightDM startup. Everything was fine until latest upgrade
All packages above are bonded together by version dependency (generally I cannot - at least not easily - downgrade just one package)

Thank you greatly for your help and time. Have a nice day!

Wunder

Member

Registered: 2018-06-01

Posts: 1

Re: After latest update of ATI drivers & xorg, 2. monitor flickers

Hi Glaeqen,

I've had the very similar issue - second monitor is flickering after xorg-common & xf86-video-ati packages updates. I've been downgrading them for a couple of weeks, but then I tried to fix it. What I did:

1. Regenerate new xorg.conf file and placed it in /etc/X11/ (I've change nothing in my X server setup before, so I don't think that was very helpful)
2. Remove xf86-video-ati package, reboot, install it again and reboot. After the first reboot my X was not working properly, but after second reboot I've got perfectly functional system with latest drivers and xorg version. My second monitor wasn't flickering, but there were some freezing image on it. To fix that I simply apply some other screen resolution setting and apply my default one again with arandr. For now my system runs fine.

Hope that helps. Have a nice day

Glaeqen

Member

Registered: 2016-08-10

Posts: 26

Re: After latest update of ATI drivers & xorg, 2. monitor flickers

Hi Glaeqen,

I've had the very similar issue - second monitor is flickering after xorg-common & xf86-video-ati packages updates. I've been downgrading them for a couple of weeks, but then I tried to fix it. What I did:

1. Regenerate new xorg.conf file and placed it in /etc/X11/ (I've change nothing in my X server setup before, so I don't think that was very helpful)
2. Remove xf86-video-ati package, reboot, install it again and reboot. After the first reboot my X was not working properly, but after second reboot I've got perfectly functional system with latest drivers and xorg version. My second monitor wasn't flickering, but there were some freezing image on it. To fix that I simply apply some other screen resolution setting and apply my default one again with arandr. For now my system runs fine.

Hope that helps. Have a nice day

Thank you for your message, I wasn't in home lately so I was unable to checkout your solution. However, it didn't work. Only downgrade works..