[Nouveau] [Bug 74164] [NV04] Native monitor resolution missing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74164

--- Comment #15 from Mauro Molinari <mauromol at tiscali.it> ---
(In reply to comment #14)
> Try to follow the code and see where things go wrong. Boot with
> nouveau.debug=trace perhaps someone left some interesting nv_debug/nv_trace
> statements somewhere. Also throw in drm.debug=0xe for good measure -- a lot
> of the pre-nv50 code still relies on that being set to emit debug statements.

So, tell me if I understood it correctly. I must add two boot parameters
(nouveau.debug=trace and drm.debug=0xe) by changing my GRUB configuration.
Then, I reboot and look at the logs (dmesg, I suppose? Or maybe also
Xorg.0.log?). Then I give a look to the nouveau source code to see if I find
some suspect. Am I right?
Please note, however, that I'm a Java developer and I know nothing about Linux
programming. So I don't think I will be able to understand too much from the
nouveau source code :-P

> Unfortunately this is getting well outside of my knowledge area. But I think
> that VBE is something emulated by the card, and perhaps part of VESA. (int
> 10h is unlikely to be involved directly though, as the system has by then
> gone into 32-bit protected mode, and overwritten the IDT. int 10h and all
> the BIOS service interrupts can really only work in 16-bit real mode.)
> nouveau tries to use the "real" interfaces to access the data, and probably
> gets it a little wrong in your case. I do know for sure that my TNT2 was
> able to work with my 1920x1200 monitor without issue (at least not relating
> to detection).

So, put in other words: could it be useful to look at the monitor-get-edid
source code to try to understand why it is working while nouveau is not?

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/nouveau/attachments/20140131/351869e4/attachment-0001.html>