Flickering Screen with ATI Radeon X1400 and Ubuntu

EDIT: ATI Radeon X1400 seems to work fine again since Ubun­tu 11.04.

There is anoth­er fix to the “well known” issues with the ATI Radeon X1400 and Ubun­tu 10.04 to 10.10 besides the one post­ed about one year ago (see here).
The pre­vi­ous fix kept the graph­ics card work­ing nor­mal­ly but harmed the over­all oper­at­ing system’s sta­bil­i­ty, so here is anoth­er fix based on dis­abling all 3D fea­tures of the device to get rid of the flick­er­ing screen.

It’s up to you to choose what you are able to live with­out
a) The desk­top set­tings pan­el and “Seg­men­ta­tion fault” errors now and then, or
b) 3D accel­er­a­tion (does not harm video play­back or any oth­er basic OS func­tion­al­i­ties)

For solu­tion a) see this.
For b) cre­ate this file: /etc/modprobe.d/radeon-kms.conf — and add fol­low­ing con­tent

options radeon modeset=0

Solu­tion found here (in Ger­man).

Leave a Reply

Your email address will not be published. Required fields are marked *