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#1 2016-10-02 11:19:25

Registered: 2016-10-02
Posts: 1

[Radeon HD 7870 XT] Cannot start X: Artifacts from last time it worke

Hello all.

I'm new to archlinux, and so far I love it. The only problem I have is a problem I already had before (on ubuntu), and is related with my AMD graphic card, a radeon hd 7870.

When I try to start X with the AMD open source drivers, I see strange artifacts on my screen, the display is completely fucked up and I can't do anything (not even swith to a tty to try a diagnostic).

I had the same problem with ubuntu : only the proprietary drivers allowed me to start X. But I'm not completely happy with catalyst so I wanted to go back to open source drivers and try to solve this.

Here's a picture of the problem: … sp=sharing

The colored parts show my wallpapers, and the bits of archlinux wiki are the page I was before uninstalling catalyst to try the open source drivers. When I had this problem on ubuntu, I was even able to see parts of windows, because it was the last thing my card displayed I guess. Is this a cache thing ?

Anyway, I'm thinking it may be acompatibility issue with my card, but I can't find any information on that. Is there a way to check if my card is compatible with open source drivers ?

If the card is supposed to be compatible, what should I try next ?

Thanks in advance.

Last edited by Kaidjin (2016-10-02 14:31:28)


#2 2016-10-02 20:35:05

Registered: 2010-02-13
Posts: 15

Re: [Radeon HD 7870 XT] Cannot start X: Artifacts from last time it worke

could you share kernel/X logs?

if 'dmesg|grep -i tahiti' is positive then look at


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