Created attachment 27993 [details] Xorg.log - AGP mode - glx module disabled (start without direct rendering) With a minimal xorg.conf (only specifying the radeon driver), xorg starts but screen stays black (programs are running in background). X does not take CPU time. With the "glx" module disabled adding a section : Section "Module" Disable "glx" EndSection X starts without freezing, but without 2D acceleration, direct rendering is disabled. The radeon and drm modules are correctly loaded. Forcing options does not changed anything : Option "AccelMethod" "EXA" Option "DRI" "on" Option "RenderAccel" "true" Reducing AGPMode to 4 does not help. The forcing BusType to "PCI" permits to let the glx module loaded, but rendering is even slower. Tried to build the radeon driver from git : -rwxr-xr-x 1 root root 1009 juil. 25 16:28 radeon_drv.la* -rwxr-xr-x 1 root root 4173219 juil. 25 16:28 radeon_drv.so* But not change. Are included some logs with the own built driver.
Created attachment 27994 [details] Xorg.log - AGP mode - glx module enabled (frozen screen at startup)
Created attachment 27995 [details] Xorg.log - PCI mode - glx module enabled (start without direct rendering) Section "Module" #Disable "glx" EndSection Section "Device" Identifier "RadeonHD2400" Driver "radeon" Option "AccelMethod" "EXA" Option "DRI" "on" Option "AGPMode" "4" Option "BusType" "PCI" # if AGPMode does not help Option "RenderAccel" "true" EndSection
Created attachment 27996 [details] output of lspci -vvvnn
What size is your agp aperture set to in the bios? Also, you should set bus type to PCIE on your card: Option "BusType" "PCIE"
Setting BusType to PCIE fixed the problem, thank you. -- cool :-)
As wanted, AGP aperture size (plus some more information on my BIOS config) : AGP Aperture Size = 128M AGP Fast Write = Enabled AGP Master 1 WS Write = Disabled AGP Master 1 WS Read = Disabled AGP 3.0 Calibration cycle = Enabled DBI Output for AGP Trans. = Disabled Regards.
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