KMS error while trying to switch user in KDE

[Tijl Coosemans]

On Sat, 23 Aug 2014 18:04:13 +0300 Toomas Aas <toomas.aas at raad.tartu.ee> wrote:
> Hello!
> 
> I have installed a new desktop machine with FreeBSD 10-STABLE amd64,  
> xorg 1.12.4 and KDE 4.12.5. The system has ATI Radeon X1300/X1550  
> video card. Graphics is configured WITH_NEW_XORG (the default), vt and  
> radeonkms are in use, video driver is xf86-video-ati-7.2.0_3 built  
> WITH_GALLIUM.
> 
> One thing that does not work is 'switch user' functionality in KDE.  
> When attempting to start new session, the screen flashes briefly and  
> then I am returned to active session with screen locked, which I can  
> unlock and continue working.
> 
> When looking at /var/log/kdm.log during the switch, it says that  
> something is wrong with X.org:
> 
> ------------------------------------------------------------------------------
> Fatal server error:
> no screens found
> 
> Please consult the The X.Org Foundation support
>           at http://wiki.x.org
>   for help.
> Please also check the log file at "/var/log/Xorg.1.log" for additional  
> information.
> 
> Server terminated with error (1). Closing log file.
> ------------------------------------------------------------------------------
> 
> So I look at Xorg.1.log and it seems to indicate a problem related to KMS:
> 
> ------------------------------------------------------------------------------
> [   431.280] (--) Using syscons driver with X support (version 2.0)
> [   431.280] (--) using VT number 10
> 
> [   431.282] (II) [KMS] Kernel modesetting enabled.
> [   431.282] (WW) VGA arbiter: cannot open kernel arbiter, no  
> multi-card support
> [   431.282] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
> [   431.282] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes  
> (32 bpp pixmaps)
> [   431.282] (==) RADEON(0): Default visual is TrueColor
> [   431.282] (==) RADEON(0): RGB weight 888
> [   431.282] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
> [   431.282] (--) RADEON(0): Chipset: "ATI Radeon X1300/X1550" (ChipID  
> = 0x7142)
> [   431.283] drmOpenDevice: node name is /dev/dri/card0
> [   431.283] drmOpenDevice: open result is 7, (OK)
> [   431.283] drmOpenByBusid: Searching for BusID pci:0000:02:00.0
> [   431.283] drmOpenDevice: node name is /dev/dri/card0
> [   431.283] drmOpenDevice: open result is 7, (OK)
> [   431.283] drmOpenByBusid: drmOpenMinor returns 7
> [   431.283] drmOpenByBusid: Interface 1.4 failed, trying 1.1
> [   431.283] drmOpenByBusid: drmGetBusid reports pci:0000:02:00.0
> [   431.283] (EE) RADEON(0): [drm] failed to set drm interface version.
> [   431.283] (EE) RADEON(0): Kernel modesetting setup failed
> [   431.283] (II) UnloadModule: "radeon"
> [   431.283] (EE) Screen(s) found, but none have a usable configuration.
> [   431.283]
> Fatal server error:
> [   431.283] no screens found
> [   431.283]
> Please consult the The X.Org Foundation support
>           at http://wiki.x.org
>   for help.
> [   431.283] Please also check the log file at "/var/log/Xorg.1.log"  
> for additional information.
> [   431.283]
> [   431.283] Server terminated with error (1). Closing log file.
> ------------------------------------------------------------------------------
> 
> Can this problem be solved?

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