Public bug reported:
Binary package hint: xserver-xorg
When the xorg.conf file is missing or otherwise corrupted, Xorg tries to
load factory settings that use the vesa driver:
[snip: /var/log/Xorg.0.log]
(==) Using default built-in configuration (43 lines)
(==) --- Start of built-in configuration ---
Section "Module"
Load "extmod"
Load "dbe"
Load "glx"
Load "freetype"
EndSection
Section "Monitor"
Identifier "Builtin Default Monitor"
Option "TargetRefresh" "75.0"
EndSection
Section "Device"
Identifier "Builtin Default fbdev Device 0"
Driver "fbdev"
EndSection
Section "Screen"
Identifier "Builtin Default fbdev Screen 0"
Device "Builtin Default fbdev Device 0"
Monitor "Builtin Default Monitor"
EndSection
Section "Device"
Identifier "Builtin Default vesa Device 0"
Driver "vesa"
EndSection
Section "Screen"
Identifier "Builtin Default vesa Screen 0"
Device "Builtin Default vesa Device 0"
Monitor "Builtin Default Monitor"
EndSection
Section "Device"
Identifier "Builtin Default vga Device 0"
Driver "vga"
EndSection
Section "Screen"
Identifier "Builtin Default vga Screen 0"
Device "Builtin Default vga Device 0"
Monitor "Builtin Default Monitor"
EndSection
Section "ServerLayout"
Identifier "Builtin Default Layout"
Screen "Builtin Default fbdev Screen 0"
Screen "Builtin Default vesa Screen 0"
Screen "Builtin Default vga Screen 0"
EndSection
(==) --- End of built-in configuration ---
However, this configuration also attempts to use the fbdev driver (kernel
framebuffer device), which is unavailable with Ubuntu's 6.06 stock kernel -
leading
to this nice crash:
Fatal server error:
Cannot run in framebuffer mode. Please specify busIDs for all
framebuffer devices.
Ubuntu should patch Xorg's built-in configuration to work.
** Affects: xorg (Ubuntu)
Importance: Untriaged
Status: Unconfirmed
--
Xorg provides unfunctioning fail-safe settings
https://launchpad.net/bugs/50718
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