Bug 716595

Summary: gnome goes to fallback mode when an external monitor is plugged
Product: [Fedora] Fedora Reporter: Francesco Tapparo <tapparo>
Component: xorg-x11-serverAssignee: X/OpenGL Maintenance List <xgl-maint>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 15CC: mcepl, xgl-maint
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2012-08-07 19:13:09 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Francesco Tapparo 2011-06-25 09:16:11 UTC
Description of problem:
gnome has to switch to fallback mode with external monitor attached.

Version-Release number of selected component (if applicable):


How reproducible:
This buf can be reproduced on a netbook samsung nc 10 with and external monitor plugged. when the netbook starts it always goes to fallback mode. If I unplug the external monitor and power the netbook on, gnome-shell runs fine, so it does not seem a performance related problem. I can also unplug the external monitor, start the netbook, wait until I'm logged inside gnome-shell and plug the external monitor. gnome-shell then automatically switches in the external monitor and runs perfectly fine.

Steps to Reproduce:
1. plug an external monitor to a samsung nc10
2. power the pc on
3. log in
  
Actual results:
gnome goes to fallback mode

Expected results:
gnome enter in gnome-shell mode

Additional info:
I tried to disable the external monitor using the "monitor" section of system settings but still I'm not able to run gnome-shell. it seems as the simple presence of the external plug makes impossible to have gnome-shell. I also tried to set the option to have the monitors cloned but it did not help.

If you need further questions feel free to ask.

thanks,
Francesco

Comment 1 Matěj Cepl 2011-07-12 22:09:59 UTC
Thanks for the bug report.  We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.

Please add drm.debug=0x04 to the kernel command line, restart computer, and attach

* your X server config file (/etc/X11/xorg.conf, if available),
* X server log file (/var/log/Xorg.*.log)
* output of the dmesg command, and
* system log (/var/log/messages)

to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above.

We will review this issue again once you've had a chance to attach this information.

Thanks in advance.

Comment 2 Fedora End Of Life 2012-08-07 19:13:11 UTC
This message is a notice that Fedora 15 is now at end of life. Fedora
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