Nouveau - Jun 2008 - [Bug 16285] New: First display corrupted when second screen plugged at boot

http://bugs.freedesktop.org/show_bug.cgi?id=16285

           Summary: First display corrupted when second screen plugged at
                    boot
           Product: xorg
           Version: 7.3
          Platform: PowerPC
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: benoar at free.fr
         QAContact: xorg-team at lists.x.org


Created an attachment (id=17019)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17019)
drm messages

With card :
0000:00:10.0 VGA compatible controller: nVidia Corporation NV34M [GeForce FX
Go5200] (rev a1)
On a 12" powerbook G4.

When I don't plug my second monitor at boot (LCD on DVI), I only see one
available screen with xrandr. My internal monitor is OK but I don't get any
output on the second one.
When plugging the second monitor at boot, I have a clone on it but the first
display becomes corrupted when X starts. Xrandr still shows me only one output
:

Screen 0: minimum 640 x 400, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
   1024x768       75.0*    72.0     70.0     60.0  
   832x624        75.0  
   800x600        75.0     72.0     60.0     56.0  
   640x480        75.0     73.0     67.0     60.0  
   720x400        70.0  

Tried by using both nvidiafb and offb (after some advices by marcheu on IRC)
but got the same result.

The "corrupted" screen looks like pixels are too evenly spaced,
showing wired
colors, and no meaningfull kind of windows.

Part of my xorg.conf :

Section "Device"
        Identifier      "nVidia Corporation NV34M [GeForce FX Go5200]"
        Driver          "nouveau"
        BusID           "PCI:0:16:0"
        Option          "UseFBDev"              "true"
        Option          "AccelMethod"           "EXA"
EndSection


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http://bugs.freedesktop.org/show_bug.cgi?id=16285





--- Comment #1 from Benjamin Cama <benoar at free.fr>  2008-06-09 17:21:48
PST ---
Created an attachment (id=17020)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17020)
xorg log


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--- Comment #2 from Danny <obiwan at mailmij.org>  2008-06-09 19:40:54 PST
---
Why do you have usefbdev in the conf? Not sure if it is causing trouble but it
is better to remove it I think.

Also, log indicates you are not using randr12, which means you probably are
using an older copy of nouveau, in which it was not default. Without randr12
dual screen cannot really work well, so consider updating to git.

d.


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Benjamin Cama <benoar at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |NOTABUG




--- Comment #3 from Benjamin Cama <benoar at free.fr>  2008-06-09 21:52:55
PST ---
OK, it was my fault, updating to the latest git did it work ... Sorry for not
having tested that prior to reporting this problem. For the record, the version
that make it work :
drm commit 4b8aecbde8e62af5370d5401d49a8ab8d089fe8e
DDX commit e034616ab2bbbc486f90c5f64e2bd2de194cf92e

And it works really well actually : it even detected the extended resolution
(1680x1050) of my LCD without a itch. This is really nice. Even Xv works quite
well.

The only "problem" is that since I switched to offb, I don't have
any more
console VT ... but now I am not stuck anymore because of some strange DMA
problem it seems (I didn't extensively test that) when switching VT.

Concerning UseFBDev, I didn't change anything and it's still set to
true. If
someone could explain me the meaning of this option, I'd be glad, as it
never
changed anything on all the linux boxes I touched ...

Thanks for all !


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