Hold back on X.org 6.9

Recent experiences with trying to use Xorg 6.9 in Debian have prompted me to post this quick warning. Xorg 6.9 is quite buggy, at least with the Radeon driver (Radeon Mobility 9000 M9). Symptoms include:

  1. Dual head (separate servers) which worked in 6.8 no longer works. The second screen is detected but remains blank
  2. Server keys ctrl+alt+Fx no longer work
  3. The whole server is very very slow. It took minutes to draw the gnome interface and longer to use the menus
  4. Running X -configure crashed out with the message below
Backtrace:
0: X(xf86SigHandler+0x80) [0x8088da0]
1: [0xffffe420]
2: X(xf86DriverlistFromCompile+0x28) [0x8080bf8]
3: X(DoConfigure+0x11) [0x8073c11]
4: X(InitOutput+0x604) [0x80719f4]
5: X(main+0x231) [0x80d3ed1]
6: /lib/tls/libc.so.6(__libc_start_main+0xd0) [0x4ada7ed0]
7: X [0x80701d1]

Fatal server error:
Caught signal 11.  Server aborting

X.org 6.8 works fine 🙂

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