From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org Subject: [Bug 91333] New: Connecting second of two monitors to a Lenovo W520 causes displays to go crazy Date: Tue, 14 Jul 2015 01:46:55 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1902983515==" Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: nouveau.vger.kernel.org --===============1902983515== Content-Type: multipart/alternative; boundary="1436838416.E5Be7Fa1.32657"; charset="UTF-8" --1436838416.E5Be7Fa1.32657 Date: Tue, 14 Jul 2015 01:46:56 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=91333 Bug ID: 91333 Summary: Connecting second of two monitors to a Lenovo W520 causes displays to go crazy Product: xorg Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Driver/nouveau Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Reporter: cjashfor-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org Created attachment 117104 --> https://bugs.freedesktop.org/attachment.cgi?id=117104&action=edit dmesg output from start to connecting the two monitors, then disconnecting the VGA monitor I am using a Lenovo W520 on Fedora 22. What I'd like to be able to do is close the laptop's display and use two external monitors. I know that Optimus is troublesome in Linux, so I have disabled it, and am using discrete graphics only (Nvidia Quadro 1000M, 108GLM). When I plug in the first of the two external monitors via the Displayport (converted to HDMI), everything works fine; I am able to use the laptop's internal display and the external monitor. When I plug in a second display via the VGA port, all of the screens go blank for a time, and then only the Displayport-connected monitor comes up. It is usable for about 10 seconds, and then the internal display shows some boot up messages, and the displayport-connected monitor shows the desktop, but I cannot type anything. About every three seconds, all screens blank out, and then the process repeats. My next step is to then disconnect the VGA monitor, and after about 10 seconds, it puts me back at the Gnome desktop login. From there I was able to log back in and get the dmesg output (attached). Looking at the dmesg output, there is a segfault in libmutter. Perhaps this is what is causing the problem. I don't know. -- You are receiving this mail because: You are the assignee for the bug. --1436838416.E5Be7Fa1.32657 Date: Tue, 14 Jul 2015 01:46:56 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Bug ID 91333
Summary Connecting second of two monitors to a Lenovo W520 causes displays to go crazy
Product xorg
Version unspecified
Hardware Other
OS All
Status NEW
Severity normal
Priority medium
Component Driver/nouveau
Assignee nouveau@lists.freedesktop.org
Reporter cjashfor@us.ibm.com
QA Contact xorg-team@lists.x.org 

Created attachment 117104 [details]
dmesg output from start to connecting the two monitors, then disconnecting the
VGA monitor

I am using a Lenovo W520 on Fedora 22.  What I'd like to be able to do is close
the laptop's display and use two external monitors.

I know that Optimus is troublesome in Linux, so I have disabled it, and am
using discrete graphics only (Nvidia Quadro 1000M, 108GLM).

When I plug in the first of the two external monitors via the Displayport
(converted to HDMI), everything works fine; I am able to use the laptop's
internal display and the external monitor.

When I plug in a second display via the VGA port, all of the screens go blank
for a time, and then only the Displayport-connected monitor comes up.  It is
usable for about 10 seconds, and then the internal display shows some boot up
messages, and the displayport-connected monitor shows the desktop, but I cannot
type anything.  About every three seconds, all screens blank out, and then the
process repeats.

My next step is to then disconnect the VGA monitor, and after about 10 seconds,
it puts me back at the Gnome desktop login.  From there I was able to log back
in and get the dmesg output (attached).

Looking at the dmesg output, there is a segfault in libmutter.  Perhaps this is
what is causing the problem.  I don't know.

You are receiving this mail because:
  • You are the assignee for the bug.
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