From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 95298] Can't "connect" to external display attached to docking station via DP on laptop with Intel/AMD dual
Date: Fri, 06 May 2016 14:41:26 +0000 [thread overview]
Message-ID: <bug-95298-502@http.bugs.freedesktop.org/> (raw)
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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@lists.freedesktop.org
Reporter: debian@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"
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next reply other threads:[~2016-05-06 14:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-06 14:41 bugzilla-daemon [this message]
2016-05-06 14:44 ` [Bug 95298] Can't "connect" to external display attached to docking station via DP on laptop with Intel/AMD dual bugzilla-daemon
2016-05-06 14:44 ` bugzilla-daemon
2016-05-06 15:11 ` bugzilla-daemon
2019-05-06 18:12 ` bugzilla-daemon
2019-11-19 9:16 ` bugzilla-daemon
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