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Pentlander

Member

Registered: 2014-03-28

Posts: 5

Dual Monitor Freeze

Whenever I plug in a second monitor into my video card and send it output with Xrandr, after a few seconds my system freezes completely. I can't access another TTY, and it stays frozen after the other monitor is unplugged. I'm using the latest xf86-video-ati with an ATI HD4870. Thanks.

Inxsible

Forum Fellow

From: Chicago

Registered: 2008-06-09

Posts: 9,183

Re: Dual Monitor Freeze

if crazy shit happens, check the logs and dmesg. Post them here. Use code tags or pastebin if the logs are huge.

We are not magicians here to guess the issues that you are having. Please learn how to ask questions the smart way !

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Pentlander

Member

Registered: 2014-03-28

Posts: 5

Re: Dual Monitor Freeze

Sorry, I know is that the issue has something to do with KMS. I had the issue when installing, and it wouldn't even start without KMS disabled. This is not just an X problem, it still freezes when X isn't started. Here are the xorg logs:
Xorg.0.log:
http://pastebin.com/dWT1ZGaS

Xorg.1.log:
http://pastebin.com/NZC2VrY5

lspci
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV770 [Radeon HD 4870] (prog-if 00 [VGA controller])

Last edited by Pentlander (2014-04-17 00:40:09)

Johaug

Member

Registered: 2013-06-15

Posts: 13

Re: Dual Monitor Freeze

This seems relevant: https://bugzilla.kernel.org/show_bug.cgi?id=60523

Try adding radeon.dpm=0 to your kernel parameters.

ant0wn

Member

Registered: 2014-04-21

Posts: 1

Re: Dual Monitor Freeze

I was having the same problem. The only solution I found was downgrading kernel to 3.10.

Funny thing is I've no problem running Manjaro on 3.14.

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