Bug 25823

Summary: Not possible to create second X session
Product: xorg Reporter: Achim Schaefer <achim_schaefer>
Component: Driver/nouveauAssignee: Nouveau Project <nouveau>
Status: CLOSED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: achim_schaefer
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Successfull start of vt 7
none
Failed start of vt 8 none

Description Achim Schaefer 2009-12-29 14:28:56 UTC
Created attachment 32365 [details]
Successfull start of vt 7

I'm using kernel 2.6.33-rc2 and compiled the drm and Xdriver myself from the latest git repos. I have a 5200 with two monitors attached one 1280X1024 the other 1024x768)
Now starting the Xserver and using it works fine. (much better than the version which is currently in debian experimental).

But as soon as I start create another Xsession (on vt 8) via kde(4.3.4) change user I only get black screens.

it is quite hard to get back to a working console, I don't know how I got it, but I got one back.
With dmesg I see this:
[  228.513498] [drm] nouveau 0000:01:00.0: Allocating FIFO number 1                                                                                                                 
[  228.514510] [drm] nouveau 0000:01:00.0: nouveau_channel_alloc: initialised FIFO 1                                                                                                
[  228.587351] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)                                                                                            
[  228.597304] [drm] DAC-7: set mode 1280x1024_75.00 3e                                                                                                                             
[  228.607513] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)                                                                                            
[  228.607519] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A                                                                                         
[  228.607847] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)                                                                                            
[  228.617793] [drm] DAC-8: set mode 1024x768_60.00 41                                                                                                                              
[  228.628011] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)                                                                                            
[  228.628016] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B                                                                                       
[  321.832750] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)                                                                                            
[  321.842694] [drm] DAC-7: set mode 1280x1024 3f                                                                                                                                   
[  321.852911] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)                                                                                            
[  321.852916] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A                                                                                         
[  321.876044] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)
[  321.885990] [drm] DAC-8: set mode 1024x768 40
[  321.896203] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)
[  321.896208] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B
[  357.277251] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
[  357.287199] [drm] DAC-7: set mode   42
[  357.297411] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
[  357.297417] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
[  357.332261] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)
[  357.342208] [drm] DAC-8: set mode 07[         43
[  357.352423] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)
[  357.352429] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B
[  368.376179] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
[  368.386123] [drm] DAC-7: set mode 1280x1024 3f
[  368.396336] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
[  368.396341] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
[  368.396353] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)
[  368.406290] [drm] DAC-8: set mode 1024x768 40
[  368.416502] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)
[  368.416506] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B
[  369.402816] [drm] nouveau 0000:01:00.0: Allocating FIFO number 2
[  369.403829] [drm] nouveau 0000:01:00.0: nouveau_channel_alloc: initialised FIFO 2
[  382.999385] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
[  383.009337] [drm] DAC-7: set mode 1280x1024_75.00 45
[  383.019546] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
[  383.019551] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
[  383.020275] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)
[  383.030221] [drm] DAC-8: set mode 1024x768_60.00 46
[  383.040433] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)
[  383.040438] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B
[  383.202592] [drm] nouveau 0000:01:00.0: nouveau_channel_free: freeing fifo 2
[  383.206524] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
[  383.216475] [drm] DAC-7: set mode 1280x1024 3f
[  383.226683] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
[  383.226688] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
[  383.229987] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)
[  383.239933] [drm] DAC-8: set mode 1024x768 40
[  383.250149] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)
[  383.250154] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B
[  383.252283] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
[  383.262229] [drm] DAC-7: set mode   47
[  383.272442] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
[  383.272448] [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
[  383.304902] [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 1)
[  383.314849] [drm] DAC-8: set mode 07[         44
[  383.325065] [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 1)
[  383.325070] [drm] nouveau 0000:01:00.0: Output DVI-I-1 is running on CRTC 1 using output B

I think at 228 I started the first X session and at 321 I switched back to the console (VT1). 
This would mean at 357 I started the second X Session.

I'll attach both Xorg.*.log files (0 for the first X session, 1 for teh other)
Comment 1 Achim Schaefer 2009-12-29 14:29:44 UTC
Created attachment 32366 [details]
Failed start of vt 8
Comment 2 Achim Schaefer 2010-01-13 14:24:22 UTC
I just upgraded to the latest Xserver from debian and linux 2.6.33-rc4 as well drm and vouveau driver from git.
=> now it works.
Don't konw which software caused the trouble, but with this configuration everything is fine (and fast!)
Comment 3 Achim Schaefer 2010-01-13 14:25:33 UTC
resolved by mzself, so close it as well

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