[Bug 95298] Can't "connect" to external display attached to docking station via DP on laptop with Intel/AMD dual
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri May 6 14:41:26 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=95298
Bug ID: 95298
Summary: Can't "connect" to external display attached to
docking station via DP on laptop with Intel/AMD dual
Product: DRI
Version: XOrg git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Radeon
Assignee: dri-devel at lists.freedesktop.org
Reporter: debian at onerussian.com
Created attachment 123520
--> https://bugs.freedesktop.org/attachment.cgi?id=123520&action=edit
entire dmesg from the boot #1
I have HP zbook 14 and using Debian testing/unstable. External monitor is
connected to docking station serving two DP connections. To make those visible
to xrandr I do
xrandr --setprovideroffloadsink 1 0
xrandr --setprovideroutputsource 1 0
where 0 corresponds to Intel, 1 to Radeon/OLAND (name changed when upgraded).
Setup was working with stock debian packages (kernel was 4.4.2-3) for awhile
but there was an issue that display didn't refresh correctly and often I had
blank patches and had to go to gnome overview and back to re-render. So I have
decided to upgrade to a current state of testing + some unstable. Currently
have xserver-xorg-core 2:1.18.3-1 xserver-xorg-video-ati 1:7.7.0-1 and kernel
4.5.1-1 . Unfortunately I can't "turn on" the external display connected to
the docking station -- screen blinks and comes back to display on the laptop,
xrandr reports xrandr: Configure crtc 4 failed and agd5f on IRC looking at
http://www.onerussian.com/tmp/dmesg-20160506-1.txt (attached to this report as
well) summarized as "link training failed on the display"
--
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20160506/f462284f/attachment.html>
More information about the dri-devel
mailing list