Comment 2 for bug 745955

dkms compilation problems solved by applying patch provided by Miguel Colon in:
http://osdir.com/ml/attachments/txtq2PBdGtr8X.txt

But still no luck with starting X with fglrx.
aticonfig --px-dgpu or aticonfig --px-dgpu seemed to try the switch but throws errors

(II) fglrx(0): === [xdl_xs110_atiddxPreInit] === begin
(II) fglrx(0): PowerXpress: Discrete GPU is selected.
libGL symbol link files sanity check failed
(EE) fglrx(0): PowerXpress: Fail to switch libGL link files.
(WW) fglrx(0): PreInit PowerXpress failed!

Also tested with 8.840 from natty rep, with the same errors

X always crashes with a Segmentation Fault like this:
Backtrace:
[ 618.316] 0: X (xorg_backtrace+0x3b) [0x80eaa7b]
[ 618.316] 1: X (0x8048000+0x5fa88) [0x80a7a88]
[ 618.316] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb78a240c]
[ 618.316] 3: X (xf86DeleteScreen+0x6c) [0x80c01dc]
[ 618.316] 4: X (InitOutput+0x89f) [0x80b7d3f]
[ 618.316] 5: X (0x8048000+0x1a645) [0x8062645]
[ 618.316] 6: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0xb75bfe37]
[ 618.316] 7: X (0x8048000+0x1a3e1) [0x80623e1]
[ 618.316] Segmentation fault at address 0xc
[ 618.316]
Caught signal 11 (Segmentation fault). Server aborting