Bug 89461 - [Radeon - FirePro M7740] Dual screen fails with kernel version 3.17
Summary: [Radeon - FirePro M7740] Dual screen fails with kernel version 3.17
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-12-09 07:43 UTC by Glenn Larsen
Modified: 2016-03-23 18:53 UTC (History)
2 users (show)

See Also:
Kernel Version: 3.17.x
Subsystem:
Regression: No
Bisected commit-id:

Attachments
dmesg with call trace (4.05 KB, text/plain)
2014-12-09 07:43 UTC, Glenn Larsen 		Details
possible fix (1.01 KB, patch)
2014-12-09 15:06 UTC, Alex Deucher 		Details | Diff
Add an attachment (proposed patch, testcase, etc.)

Description Glenn Larsen 2014-12-09 07:43:37 UTC 
Created attachment 160201 [details]
dmesg with call trace

Booting with a dual screen setup (using displayport and VGA), it fail during starting of Xorg. This happened from kernel 3.17. I have tested up to 3.17.6.
Comment 1 Alex Deucher 2014-12-09 15:06:39 UTC 
Created attachment 160261 [details]
possible fix

The attached patch should fix it.
Comment 2 Glenn Larsen 2014-12-16 05:51:04 UTC 
Confirmed, the attached patch did fix the issue! Thank you!
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