Nouveau - Oct 2009 - [Bug 24710] New: nouveau KMS fails on NV11 - screen displays last input

http://bugs.freedesktop.org/show_bug.cgi?id=24710

           Summary: nouveau KMS fails on NV11 - screen displays last input
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: jb.faq at gmx.de
         QAContact: xorg-team at lists.x.org


Created an attachment (id=30652)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=30652)
dmesg output after loading kms with KMS enabled

I build the nouveau-kernel as recommended here: 
http://nouveau.freedesktop.org/wiki/InstallDRM
(Tried both master and master-compat)

Steps to reproduce
(I'm on gentoo)
1) I boot this kernel and login as root (VT)
2) modprobe -r nouveau
3) modprobe nouveau modeset=1
4) See a black screen shortly, then see the old VT, but now you cannot see new
inputs

Login with ssh still works or you can use the VT blindly


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Jan Buecken <jb.faq at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         OS/Version|All                         |Linux (All)
           Platform|Other                       |x86 (IA32)




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Jan Buecken <jb.faq at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #30652|dmesg output after loading  |dmesg output after loading
        description|kms with KMS enabled        |nouveau with KMS enabled




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--- Comment #1 from Maarten Maathuis <madman2003 at gmail.com>  2009-10-24
04:02:09 PST ---
Is fbcon builtin or loaded (if it's a module)?


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--- Comment #2 from Jan Buecken <jb.faq at gmx.de>  2009-10-26 05:07:57
PST ---
(In reply to comment #1)
> Is fbcon builtin or loaded (if it's a module)?
> 
builtin.
I know the fbcon thing from the ati-kms ( I have a second system with r600 ati
and the kms works for me...)


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--- Comment #3 from Jan Buecken <jb.faq at gmx.de>  2009-10-26 09:02:34
PST ---
Now I compiled fbcon as module, git today, branch master.
I booted the new kernel, unload nouveau, modprobe fbcon, modprobe nouveau
modeset=1

The problem still holds.

More precisely I see my frozen VT, but today I recognized the Cursor is
blinking (this is not a different to fbcon builtin, I just recognized it
today). But I don't know if this makes any differences.

greetings


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Francisco Jerez <currojerez at riseup.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |NOTOURBUG




--- Comment #4 from Francisco Jerez <currojerez at riseup.net>  2009-10-26
11:53:08 PST ---
(In reply to comment #3)
> Now I compiled fbcon as module, git today, branch master.
> I booted the new kernel, unload nouveau, modprobe fbcon, modprobe nouveau
> modeset=1
> 
> The problem still holds.
> 
> More precisely I see my frozen VT, but today I recognized the Cursor is
> blinking (this is not a different to fbcon builtin, I just recognized it
> today). But I don't know if this makes any differences.
> 
> greetings
>

http://bugs.freedesktop.org/show_bug.cgi?id=24710





--- Comment #5 from Jan Buecken <jb.faq at gmx.de>  2009-11-01 01:34:48
PST ---
Created an attachment (id=30875)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=30875)
forced kernel command line option
> Doesn't sound like nouveau's fault, your monitor probably reports a
broken
> EDID. To workaround it you can manually set the framebuffer resolution in
the
> kernel command line, like:
> > video=VGA-1:1024x768e
> (The trailing "e" forces the output to be enabled)
Tried this, but the problem still exists!

But the message
> > [drm:edid_is_valid] *ERROR* EDID checksum is invalid, remainder is 141
disappear (see new dmesg log)

New ideas?


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Jan Buecken <jb.faq at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|NOTOURBUG                   |




--- Comment #6 from Jan Buecken <jb.faq at gmx.de>  2009-11-01 01:38:51
PST ---
Reopen because forcing the video output is not a solution. And thus the wrong
EDID is not the problem (?)


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Jan Buecken <jb.faq at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|nouveau KMS fails on NV11 - |nouveau KMS fails on NV11 -
                   |screen displays last input  |screen freeze




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--- Comment #7 from Jan Buecken <jb.faq at gmx.de>  2009-11-01 15:29:12
PST ---
checked out new git today. behavior changed:
After loading KMS I get a simple black screen instead of a frozen screen.


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--- Comment #8 from Jan Buecken <jb.faq at gmx.de>  2009-11-06 08:40:14
PST ---
Tried an other monitor (MD6155AH) today. Does work!

But: Tried forcing the resolution with the command line option
(video=VGA-1:1024x768e) with this monitor. Does not work (same problem, black
screen)! The monitor tells me it has no connection any more.

Tried other resolutions with the old monitor (LT1772ie, which is technical the
same like an Acerview 76ie)
The resolution 800x600e does work! This seems to be the resolution the kernel
boots with (so there is no resolution switch?). Maybe it is not possible to
switch the resolutions if it is forced by kernel command line?

If necessary I can upload the new dmesg outputs of the different cases.


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--- Comment #9 from Jan Buecken <jb.faq at gmx.de>  2009-11-06 09:34:14
PST ---
Created an attachment (id=31015)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31015)
get-edid | parse-edid output

get-edid | parse-edid output from the "read-edid" toolkit


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--- Comment #10 from Jan Buecken <jb.faq at gmx.de>  2009-11-06 10:37:45
PST ---
Created an attachment (id=31016)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31016)
forced 1024x768 but drm debug=4

New dmesg with command line option video=VGA-1:1024x768e
but first 
modprobe -r nouveau, 
modprobe drm debug=4, 
then modprobe nouveau modeset=1


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--- Comment #11 from Francisco Jerez <currojerez at riseup.net> 
2009-11-06 12:56:10 PST ---
Created an attachment (id=31018)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31018)
set_crtc_info_for_cmdline_modes.patch

Does the attached patch help?


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--- Comment #12 from Jan Buecken <jb.faq at gmx.de>  2009-11-07 04:36:39
PST ---
(In reply to comment #11)
> Created an attachment (id=31018)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31018)
[details]
> set_crtc_info_for_cmdline_modes.patch
> 
> Does the attached patch help?
> 
Yes, this patch works! (I only test the situation with the command line
video=VGA-1:1024x768e )

Thanks.


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Francisco Jerez <currojerez at riseup.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED




--- Comment #13 from Francisco Jerez <currojerez at riseup.net> 
2009-11-20 17:36:59 PST ---
The patch is already in Linus' kernel tree and it will eventually flow back
to
nouveau, so I'm marking this bug as closed.


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