http://bugs.freedesktop.org/show_bug.cgi?id=22311

           Summary: Both X servers hang when starting firefox in second X
                    server with modeset enabled
           Product: xorg
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: [email protected]
        ReportedBy: [email protected]
         QAContact: [email protected]


Created an attachment (id=26825)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=26825)
Log from second X server

How reproducable: Always

Steps to reproduce:
1. Boot (runlevel 5, graphical login)
2. Switch to virtual terminal 2
3. type "X :1&"
4. Switch back to virtual terminal 2
5. type "kwin&firefox"
6. Wait for disk activity to cease
7. Switch to second X server (on Fedora 11, this will be on virtual terminal 7
by default)

Results:
Cursor disappears, screen does not switch to X server, machine unresponsive,
cannot switch virtual terminal or use CTRL+ALT+BACKSPACE, but ssh still works.
Both X servers are at 50% CPU. If I kill the second X server, the first goes to
100% CPU and requires killing as well. After that the machine is unusable
(except through ssh).

It all works if I add nomodeset to the kernel command line.


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