Ubuntu
xorg-server package

On a Wyse system, if Intel DP is connected before the AMD one, there's a 50% chance the AMD one would have no output

Bug #1828790 reported by Jesse Sung
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xorg-server (Ubuntu)
Fix Released
Undecided
Unassigned
Xenial
Won't Fix
Undecided
Unassigned
Bionic
Fix Released
Undecided
Timo Aaltonen
xorg-server-hwe-16.04 (Ubuntu)
Invalid
Undecided
Unassigned
Xenial
Fix Released
Undecided
Unassigned
Bionic
Invalid
Undecided
Unassigned

Bug Description

Summary:
On extended SKU (AMD SKU), boot to OS with monitor connecting to Intel DP, then connect another monitor to AMD DP, there is a 50% chance AMD DP has no video output to monitor.

Step to reproduce:
1. Attached a 2k/4K monitor to Intel UMA DP port.
2. Power on system and boot to desktop.
3. Attach another 2k/4K monitor to AMD Graphics DP port.

Expect result:
Both monitors can display correctly

Actually result:
AMD DP monitor will be black screen. (Intel DP output still normal)

Timo Aaltonen (tjaalton)
Changed in xorg-server (Ubuntu Xenial):
status: New → Invalid
status: Invalid → Won't Fix
Changed in xorg-server-hwe-16.04 (Ubuntu):
status: New → Invalid
Changed in xorg-server-hwe-16.04 (Ubuntu Bionic):
status: New → Invalid
Changed in xorg-server (Ubuntu):
status: New → Fix Released
Changed in xorg-server (Ubuntu Bionic):
assignee: nobody → Timo Aaltonen (tjaalton)
status: New → Triaged
Revision history for this message
Timo Aaltonen (tjaalton) wrote :

https://bugs.freedesktop.org/show_bug.cgi?id=101998

Revision history for this message
Timo Aaltonen (tjaalton) wrote :

cd19a752f8bbc6c modesetting: code refactor for PRIME sync

Revision history for this message
Timo Aaltonen (tjaalton) wrote :

this is actually fixed in bionic
xorg-server (2:1.19.6-1ubuntu4.1) bionic; urgency=medium

  * prime-sync-refactor.diff: Fix crash on modesetting+amdgpu hybrid.
    (LP: #1789913)
  * sync-i965-pciids.diff: Update intel pci-id's. (LP: #1789924)

 -- Timo Aaltonen <email address hidden> Wed, 05 Sep 2018 14:38:25 +0300

Changed in xorg-server (Ubuntu Bionic):
status: Triaged → Fix Released
Revision history for this message
Timo Aaltonen (tjaalton) wrote :

and also backported to xenial

xorg-server-hwe-16.04 (2:1.19.6-1ubuntu4.1~16.04.1) xenial; urgency=medium

  * prime-sync-refactor.diff: Fix crash on modesetting+amdgpu hybrid.
    (LP: #1789913)

 -- Timo Aaltonen <email address hidden> Wed, 05 Sep 2018 14:31:56 +0300

Changed in xorg-server-hwe-16.04 (Ubuntu Xenial):
status: New → Fix Released
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