[Bug 36007] [natty] system freezes on boot without disabling KMS

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=36007

--- Comment #23 from Gabor Lenart <spam at lgb.hu> 2011-04-11 04:51:51 PDT ---
Ok, no choice, I try to repeat the whole bisecting process, unfortunately it's
not so trivial: sometimes other problems occured, and maybe I was a bit nervous
to use "skip" when I should. I always use "make mrproper" now before each build
since it seems sometimes I met problems even with "make clean". The interesting
part that I noticed odd problems not seems to related to the radeon problem,
like other kernel oopses, when I see tons of running modprobe processes in
process status "D". It seems using a more basic kernel config makes them
disappear (especially disabling audio helps it seems) since it's merely
impossible to check the KMS specific problems because of other noticable
problems, including strage messages about PnP BIOS too for example ...
Hopefully that's not related to my problem otherwise it's not so possible to
identify that a kernel is good or bad, if I am only focusing a single test case
when inserting radeon module with KMS enabled makes the system freezes (with
black screen). 

Btw that PnP BIOS problem I sometimes can notice:

[    0.167336] PnPBIOS: Scanning system for PnP BIOS support...
[    0.167754] PnPBIOS: Found PnP BIOS installation structure at 0xc00fe0f0
[    0.167811] PnPBIOS: PnP BIOS version 1.0, entry 0xf0000:0xba2f, dseg 0x400
[    0.167869] PNPBIOS fault.. attempting recovery.
[    0.167920] PnPBIOS: Warning! Your PnP BIOS caused a fatal error. Attempting
to continue
[    0.167983] PnPBIOS: You may need to reboot with the "pnpbios=off" option to
operate stably
[    0.168019] PnPBIOS: Check with your vendor for an updated BIOS
[    0.168073] PnPBIOS: dev_node_info: unexpected status 0x3a
[    0.168124] PnPBIOS: Unable to get node info.  Aborting.

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