Nouveau - Jan 2012 - [Bug 45421] New: regression: nouveau.ko fails to load

https://bugs.freedesktop.org/show_bug.cgi?id=45421

             Bug #: 45421
           Summary: regression: nouveau.ko fails to load
    Classification: Unclassified
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: jesse.brandeburg at intel.com
         QAContact: xorg-team at lists.x.org


Created attachment 56355
  --> https://bugs.freedesktop.org/attachment.cgi?id=56355
dmesg from boot for failed driver load

nouveau fails to load
v3.2 works okay
v3.3-rc1 fails
nouveau git fails

I tried to bisect but got compile errors due to HWMON, and then two panics in a
row on different commits, so I gave up bisect.

full dmesg from boot attached, the critical bit is:
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.455869] MXM: GUID detected in BIOS
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.467051] VGA switcheroo: detected
Optimus DSM method \ handle
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.481163] [drm] nouveau
0000:01:00.0: Detected an NV50 generation card (0x096e00a1)
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.492671] checking generic (d1000000
1e0000) vs hw (c0000000 10000000)
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.492673] checking generic (d1000000
1e0000) vs hw (d0000000 2000000)
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.492675] fb: conflicting fb hw
usage nouveaufb vs VESA VGA - removing generic driver
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.504429] Console: switching to
colour dummy device 80x25
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.510526] sdhci-pci 0000:86:09.1:
Will use DMA mode even though HW doesn't fully claim to support it.
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.513433] [drm] nouveau
0000:01:00.0: Attempting to load BIOS image from PRAMIN
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.579993] sdhci-pci 0000:86:09.1:
Will use DMA mode even though HW doesn't fully claim to support it.
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.599872] [drm] nouveau
0000:01:00.0: ... appears to be valid
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.599876] [drm] nouveau
0000:01:00.0: BIT BIOS found
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.599880] [drm] nouveau
0000:01:00.0: Bios version 62.94.3b.00
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.599883] [drm] nouveau
0000:01:00.0: TMDS table version 2.0
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.600121] [drm] nouveau
0000:01:00.0: MXM: BIOS version 2.1
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.600449] [drm] nouveau
0000:01:00.0: MXM: failed to locate valid SIS
Jan 30 17:07:13 jbrandeb-mobl kernel: [    2.605529] nouveau: probe of
0000:01:00.0 failed with error -22

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--- Comment #1 from Ben Skeggs <skeggsb at gmail.com> 2012-01-30 19:16:52
PST ---
Thanks for the report.

Firstly, are you able to boot with "drm.debug=14 log_buf_len=1M" for
me, and
attach the resulting dmessage.

Secondly, can you also attach /sys/kernel/debug/dri/0/vbios.rom for me please
(load "working" nouveau, and mount debugfs at /sys/kernel/debug to get
it).

And finally, could you also copy all the files from /sys/firmware/acpi/tables
somewhere, and tar them up and attach them here.

Thanks!
Ben.

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https://bugs.freedesktop.org/show_bug.cgi?id=45421

Jesse Brandeburg <jesse.brandeburg at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #56402|0                           |1
        is obsolete|                            |

--- Comment #5 from Jesse Brandeburg <jesse.brandeburg at intel.com>
2012-01-31 17:10:56 UTC ---
Created attachment 56420
  --> https://bugs.freedesktop.org/attachment.cgi?id=56420
acpi dump after cp to new directory

sorry if the files were zero before, didn't check that.  Files have content
now.

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--- Comment #2 from Jesse Brandeburg <jesse.brandeburg at intel.com>
2012-01-31 09:23:22 PST ---
Created attachment 56400
  --> https://bugs.freedesktop.org/attachment.cgi?id=56400
dmesg with drm.debug=14 from boot with 3.3.0-rc1

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--- Comment #3 from Jesse Brandeburg <jesse.brandeburg at intel.com>
2012-01-31 09:30:40 PST ---
Created attachment 56401
  --> https://bugs.freedesktop.org/attachment.cgi?id=56401
vbios from HP 8530w/770M

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--- Comment #4 from Jesse Brandeburg <jesse.brandeburg at intel.com>
2012-01-31 09:31:25 PST ---
Created attachment 56402
  --> https://bugs.freedesktop.org/attachment.cgi?id=56402
8530w acpi dump (tarbz2) as requested

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--- Comment #6 from Ben Skeggs <skeggsb at gmail.com> 2012-01-31 21:35:00
PST ---
(In reply to comment #5)
> Created attachment 56420 [details]
> acpi dump after cp to new directory
> 
> sorry if the files were zero before, didn't check that.  Files have
content
> now.
Thanks!  I believe I know where the root cause of this issue is, and I'll
attempt to get a patch ready to fix it properly tomorrow.

In the meantime, nouveau git will no longer completely fail init in these
situations, so you should be able to use it again.  The patch has been sent
upstream for 3.3-rc also.

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--- Comment #7 from Jesse Brandeburg <jesse.brandeburg at intel.com>
2012-02-01 15:43:23 PST ---
Created attachment 56482
  --> https://bugs.freedesktop.org/attachment.cgi?id=56482
output from driver after patch to make it load

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--- Comment #8 from Jesse Brandeburg <jesse.brandeburg at intel.com>
2012-02-08 09:41:08 PST ---
nouveau git commit that seems to fix it:
f41a8e1bcbd69148dd39568a6f062ae698ad4afc

upstream commit that works around the issue (I think):
ce2e7895faba8fabaa917f52293126e5f4174fa9

thanks Ben!!!

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Emil Velikov <emil.l.velikov at gmail.com> changed:

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

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Jesse Brandeburg <jesse.brandeburg at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

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