Bug 93831 - Black Screen after enabling 8 monitros on 2 GPUs (R390x)
Summary: Black Screen after enabling 8 monitros on 2 GPUs (R390x)
Status: RESOLVED MOVED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium blocker
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-01-23 16:34 UTC by Andreas Wunder
Modified: 2019-11-19 07:55 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments

Description Andreas Wunder 2016-01-23 16:34:31 UTC
Hello,

i have an 8 monitor dual gpu setup and am unable to enable all of my 8 monitors. as soon as i do that, the screen becomes either black or the whole system becomes unresponsive, the GPU fans starting to run 100% (after a while) and i cant do anything but reset.

the gpus are OK - under windows they work and all of my 8 monitors work too.

i should add that even with fglrx there is no way for it to work.

it would be really awesome if there is a way to have my 8 screens. i am more than happy to do what it takes, let me know what you need.

thanks,
Andreas
Comment 1 Alex Deucher 2016-01-26 19:50:13 UTC
Please attach your xorg log and dmesg output and describe the arrangement (4x2, 8x1, etc.) of displays you are trying to configure.
Comment 2 Ernst Sjöstrand 2016-01-26 20:19:18 UTC
What's the max that does work? 6?
Comment 3 Andreas Wunder 2016-01-26 20:28:35 UTC
Thanks for coming back to me - i will try to deliver some logs over the weekend, right now i am tied with windows :(

7 were working (but a few only in mirror mode), on the 8th it was crashing - with radeon.

similar thing happened with fglrx, but it wasnt crashing there, it kept telling me there were no memory left to enable the monitor. my Radeon 390x have 8GB of memory each and my system has 48GB of RAM - so there's plenty of memory free.

what may be important, though: starting with a live linux dvd it usually enables only one display adapter, the second is disabled. sometimes its enabled (like on GNOME 3) but it lets me only extent the desktop to a total of 4 monitors, the other 2 (or 3) are mirrored..

on xfce4 i was able to enable the second adapter via xrandr but as soon as i started to enable another monitor, entire xorg crashed.

regarding the setup its like this:

M M M M --> Adapter 1
M M M M --> Adapter 2

thanks a lot!
Andreas
Comment 4 Martin Peres 2019-11-19 07:55:11 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/driver/xf86-video-ati/issues/152.


Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.