Nouveau - Jul 2010 - [Bug 29171] New: Garbled console on Macbook 13" (6, 1 9400M]) when using EFI

https://bugs.freedesktop.org/show_bug.cgi?id=29171

           Summary: Garbled console on Macbook 13" (6,1 9400M]) when using
                    EFI
           Product: xorg
           Version: 7.5
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: felix.leimbach at gmx.net
         QAContact: xorg-team at lists.x.org


Created an attachment (id=37238)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37238)
Kernel config for EFI boot

On my macbook 13" (late 2009, 6,1) with a GeForce 9400M (0x0ac180b1) when
booting nouveaufb kicks in and displays a garbled screen. Mostly black, some
greenish lines, some very unreadable text.

Interestingly, that only happens when I use the Macbook's native EFI mode
(i.e.
*without* BIOS emulation).
If I use the BIOS emulation then nouveau works.

Typing blindly, I extracted the dmesg output, from an EFI boot:

#grep -i -e drm -e nouv -e fb efi-dmesg
Kernel command line: BOOT_IMAGE=/boot/experimental root=/dev/sda5 video=efifb
reboot=pci
efifb: probing for efifb
efifb: framebuffer at 0xc0010000, mapped to 0xffffc90004580000, using 6400k,
total 6400k
efifb: mode is 1280x800x32, linelength=8192, pages=1
efifb: scrolling: redraw
efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
fb0: EFI VGA frame buffer device
[drm] Initialized drm 1.1.0 20060810
nouveau 0000:02:00.0: enabling device (0002 -> 0003)
nouveau 0000:02:00.0: PCI INT A -> Link[LGPU] -> GSI 16 (level, low) ->
IRQ 16
nouveau 0000:02:00.0: setting latency timer to 64
[drm] nouveau 0000:02:00.0: Detected an NV50 generation card (0x0ac180b1)
fb: conflicting fb hw usage nouveaufb vs EFI VGA - removing generic driver
[drm] nouveau 0000:02:00.0: Attempting to load BIOS image from ACPI
[drm] nouveau 0000:02:00.0: ... BIOS signature not found
[drm] nouveau 0000:02:00.0: Attempting to load BIOS image from PRAMIN
[drm] nouveau 0000:02:00.0: ... appears to be valid
[drm] nouveau 0000:02:00.0: BIT BIOS found
[drm] nouveau 0000:02:00.0: Bios version 62.79.77.00
[drm] nouveau 0000:02:00.0: TMDS table revision 2.0 not currently supported
[drm] nouveau 0000:02:00.0: Found Display Configuration Block version 4.0
[drm] nouveau 0000:02:00.0: Raw DCB entry 0: 01000123 00010014
[drm] nouveau 0000:02:00.0: Raw DCB entry 1: 02021232 00000010
[drm] nouveau 0000:02:00.0: Raw DCB entry 2: 02021286 0f220010
[drm] nouveau 0000:02:00.0: Raw DCB entry 3: 0000000e 00000000
[drm] nouveau 0000:02:00.0: DCB connector table: VHER 0x40 5 16 4
[drm] nouveau 0000:02:00.0:   0: 0x00000040: type 0x40 idx 0 tag 0xff
[drm] nouveau 0000:02:00.0:   1: 0x0000a146: type 0x46 idx 1 tag 0x08
[drm] nouveau 0000:02:00.0: Parsing VBIOS init table 0 at offset 0xDC70
[drm] nouveau 0000:02:00.0: Parsing VBIOS init table 1 at offset 0xDF48
[drm] nouveau 0000:02:00.0: Parsing VBIOS init table 2 at offset 0xDF4A
[drm] nouveau 0000:02:00.0: Parsing VBIOS init table 3 at offset 0xE00B
[drm] nouveau 0000:02:00.0: Parsing VBIOS init table 4 at offset 0xE0D0
[drm] nouveau 0000:02:00.0: Parsing VBIOS init table at offset 0xE135
[drm] nouveau 0000:02:00.0: 0xE135: Condition still not met after 20ms,
skipping following opcodes
[drm] nouveau 0000:02:00.0: Couldn't find matching output script table
[drm] nouveau 0000:02:00.0: 0xC88E: parsing output script 0
[drm] nouveau 0000:02:00.0: 0xCB5A: parsing output script 0
[drm] nouveau 0000:02:00.0: Detected 256MiB VRAM
[drm] nouveau 0000:02:00.0: Stolen system memory at: 0x0070000000
[drm] nouveau 0000:02:00.0: 512 MiB GART (aperture)
[drm] nouveau 0000:02:00.0: Allocating FIFO number 1
[drm] nouveau 0000:02:00.0: nouveau_channel_alloc: initialised FIFO 1
[drm] nouveau 0000:02:00.0: Detected a LVDS output
[drm] nouveau 0000:02:00.0: Detected a TMDS output
[drm] nouveau 0000:02:00.0: Detected a DP output
[drm] nouveau 0000:02:00.0: Detected a LVDS connector
[drm] nouveau 0000:02:00.0: Detected a DisplayPort connector
[drm] nouveau 0000:02:00.0: timeout: (0x610200 & 0x1e0000) != 0
[drm] nouveau 0000:02:00.0: 0x610200 = 0x0c052b08
[drm] nouveau 0000:02:00.0: timeout: (0x610200 & 0x1e0000) == 0
[drm] nouveau 0000:02:00.0: 0x610200 = 0x0c050008
[drm] nouveau 0000:02:00.0: nouveau_channel_free: freeing fifo 1
nouveau 0000:02:00.0: PCI INT A disabled
nouveau: probe of 0000:02:00.0 failed with error -16

Kernel version: 2.6.35-rc3 (config attached)
Distribution: Gentoo

What's wrong? Let me know if you need anything, can even provide shell
access
if need be.

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Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #37238|application/octet-stream    |text/plain
          mime type|                            |

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--- Comment #1 from Marcin Slusarz <marcin.slusarz at gmail.com>
2010-07-20 11:43:30 PDT ---
efifb->nouveau handover seems to work. Probably efifb overwrote some
important
memory region which nouveau does not initialize/know about.

The code which is printing these "timeout: (0x610200 & 0x1e0000) !=
0" comes
from nv (bug 12637), so I'm wondering: does xf86-video-nv (without nouveau
kernel module) work?

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--- Comment #2 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-20
12:17:49 PDT ---
> The code which is printing these "timeout: (0x610200 & 0x1e0000)
!= 0" comes
> from nv (bug 12637), so I'm wondering: does xf86-video-nv (without
nouveau
> kernel module) work?
It does *not* work. After booting into runlevel 2 and running startx the screen
turned black and stayed black. Networking was still alive and I saved the
Xorg.0.log.

So only the proprietary driver works :-(

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--- Comment #3 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-20
12:19:07 PDT ---
Created an attachment (id=37250)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37250)
Xorg log from starting X with the NV driver. Hangs with black screen

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--- Comment #4 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-20
12:33:53 PDT ---
Interestingly, if I boot a kernel which only has vesafb (i.e. not efifb) I get
the exact same result: Console is fine, starting X with the nv driver produces
black screen and hang.

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--- Comment #5 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-20
12:36:25 PDT ---
Another interesting tidbit: While X works well with the proprietary driver the
consoles (efifb) stay black once X started. I.e pressing ctrl+alt+f1 gives a
black screen (but typing blindly works) and pressing crtl+alt+f7 brings me back
to the X session.

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--- Comment #6 from Marcin Slusarz <marcin.slusarz at gmail.com>
2010-07-20 12:51:32 PDT ---
Our only chance is mmiotracing nvidia kernel module and figuring out what they
do differently. 

http://nouveau.freedesktop.org/wiki/MmioTrace

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--- Comment #7 from Ben Skeggs <skeggsb at gmail.com> 2010-07-20 15:33:22
PDT ---
Ah, this is a known issue.  EFI leaves the display engine in a state we're
not
expecting.  As Marcin said, a mmiotrace of the binary driver would be very
useful to see how they reset it to the state we expect.

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--- Comment #8 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-21
13:02:35 PDT ---
OK, I've got the mmio trace:
http://rapidshare.com/files/408257350/nvidia-efi-trace.bz2

This is how it was produced:
1) boot into console on kernel 2.6.32-gentoo-r6
2) start tracing
3) add marker
4) modprobe nvidia
5) add marker
6) start x and wait until DE is finished
6) end trace

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--- Comment #9 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-21
13:03:41 PDT ---
Created an attachment (id=37278)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37278)
dmesg of the trace in comment #8

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Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #37278|application/octet-stream    |text/plain
          mime type|                            |

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--- Comment #10 from Ben Skeggs <skeggsb at gmail.com> 2010-07-21 19:45:41
PDT ---
Created an attachment (id=37289)
 View: https://bugs.freedesktop.org/attachment.cgi?id=37289
 Review: https://bugs.freedesktop.org/review?bug=29171&attachment=37289

EVO channel init modifications

Can you try the attached patch for me, and provide the dmesg output you see
with it.

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--- Comment #11 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-21
22:58:03 PDT ---
Created an attachment (id=37292)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37292)
dmesg output with evo patch

Attached booting into efifb => nouveaufb => x with the attached patch
applied.
However, I think the debug output you are looking for is not there?

Here's what I did:
1) Apply patch to 2.6.35-rc3, applied fine with 1 line offset (don't have
the
bandwidth to download current git at the moment - can do that on the weekend if
needed)
2) boot into patched kernel with video=efifb
3) symptoms are the same (garbled screen)
4) log in blindly to start x
5) switch to a console again and dump dmesg

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--- Comment #12 from Ben Skeggs <skeggsb at gmail.com> 2010-07-21 23:10:14
PDT ---
The output indicates that you're not running with those patches, those
timeout
messages don't exist with the patch applied.

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--- Comment #13 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-22
10:55:13 PDT ---
Created an attachment (id=37320)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37320)
dmesg output with evo patch (real)

Ben, you're the man. After applying your patch correctly (didn't remove
the
--dry-run last time ...) nouveaufb now *works*. Yay!

The X driver doesn't yet work, but I will update to latest git first before
reporting that.

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Felix Leimbach <felix.leimbach at gmx.net> changed:

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

--- Comment #14 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-22
12:38:49 PDT ---
Now I've updated xf86-video-nouveau to latest git and voila, X runs
perfectly.

Kernel: 2.6.35-rc5 with nouveau-drm from today's git
xorg nouveau driver: today's git

On a small sidenote: When during boot the console switches from efifb to
nouveaufb for about one second there is still the garbled screen. Then it goes
away and the console output starts at around the middle of the screen
(vertical).

Big thanks for the uber-fast and competent handling, closing as FIXED.

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--- Comment #15 from Felix Leimbach <felix.leimbach at gmx.net> 2010-07-22
12:41:25 PDT ---
BTW, should we report this to the nv guys? I guess they need a similar fix.

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Ben Skeggs <skeggsb at gmail.com> changed:

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

--- Comment #16 from Ben Skeggs <skeggsb at gmail.com> 2010-07-22 19:42:52
PDT ---
Re-opening bug, as it's not fixed in nouveau as of yet.  I'm still not
entirely
sure what the correct fix *is*.

Reporting to the nv guys may be useful, though I'm not entirely sure if
you'll
see any response from them.  If for some reason they do fix it, it'll be
useful
as we'll hopefully get some idea of how to properly fix it (hint: nvidia
write
nv) :)

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--- Comment #17 from Felix Leimbach <felix.leimbach at gmx.net> 2010-08-04
10:54:50 PDT ---
OK, I've used nouveau on this configuration for some weeks now and here are
my
findings:

What is great:
1) Suspend & Resume works beautifully
2) X feels snappy and KDE 4.4's composite effects work very well
3) Dual-screen configuration works (also on-the-fly plugging and unplugging)
except:
3a) When setting the external monitor's native resolution of 1600x1200 that
monitor flickers badly and moving mouse or windows there is very very sluggy.
3b) If I use 1200x1024 instead then all works well except that there is an
occasional flicker. I.e. it flickers once and all is fine for 10 minutes until
it flickers once again

But there is problem too:

4) X.org freezes always after roughly 1 day of uptime. In just hangs and not
even switching to the console is possible. However network login through ssh is
possible and the Xorg.log contains a stacktrace which I will post below.

How shall we proceed? I can test anything you throw at me ...

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--- Comment #18 from Felix Leimbach <felix.leimbach at gmx.net> 2010-08-04
11:03:50 PDT ---
Created an attachment (id=37574)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37574)
Xorg.log after crash

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Daniel Stone <daniel at fooishbar.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |daniel at fooishbar.org

--- Comment #19 from Daniel Stone <daniel at fooishbar.org> 2010-08-04
13:41:49 PDT ---
The patch also fixes it for me on a MacBookAir2,1 w/9400M, booting through EFI.
 Thanks! :) I see hangs every now and again, but haven't managed to grab a
log
out of them yet.

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--- Comment #20 from Felix Leimbach <felix.leimbach at gmx.net> 2010-08-06
01:56:42 PDT ---
Created an attachment (id=37622)
 View: https://bugs.freedesktop.org/attachment.cgi?id=37622
 Review: https://bugs.freedesktop.org/review?bug=29171&attachment=37622

Updated version that applies to git from 2010-08-06

Ben's original patch doesn't apply to today's git anymore, so
here's an updated
version. No real changes were made.
Now I'm seeing another bug (#29415) but I guess that's not due to this
patch.

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--- Comment #21 from Yuriy Khomchik <homyur at gmail.com> 2010-09-13
02:32:45 PDT ---
It looks like bug 29714. In this case, my laptop also uses EFI. I also sent
output of MMIO tracing by e-mail to the appropriate address on 4 September.

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Yuriy Khomchik <homyur at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=29714

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--- Comment #22 from Felix Leimbach <felix.leimbach at gmx.net> 2010-09-13
05:47:36 PDT ---
#29714 has indeed the very same symptoms as this. Also, I've seen similar
and
repeated messages of "unplugged DisplayPort" and "plugged
DisplayPort".

What happens when you try the attachment "EVO channel init
modifications"? For
me it solved the garbled screen problem.
But unfortunately nouveau crashes so frequently that I had to revert to the
binary driver for now.

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--- Comment #23 from Yuriy Khomchik <homyur at gmail.com> 2010-09-14
11:25:12 PDT ---
With this patch instead corrupted screen I see black screen. Output of dmesg on
Linux kernel version 2.6.35 see in bug 29714.

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--- Comment #24 from Yuriy Khomchik <homyur at gmail.com> 2010-09-30
12:41:47 PDT ---
Commit
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=2aa335a9b84e5403c3d0be3a35237c6c695d812e
fixes similar bug 29714.

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--- Comment #25 from Ben Skeggs <skeggsb at gmail.com> 2010-10-19 22:39:02
PDT ---
The issues on MacBooks + EFI (which is all this bug is covering) may be fixed
in current nouveau git.

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--- Comment #26 from Felix Leimbach <felix.leimbach at gmx.net> 2010-10-21
13:48:58 PDT ---
Tried nouveau-drm and xf86-video-nouveau from today's git together with
kernel
2.6.36.

However the screen freezes in the middle of the boot process (at the udev
stage) and the dmesg (attached) shows an OOPS.

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--- Comment #27 from Felix Leimbach <felix.leimbach at gmx.net> 2010-10-21
13:50:10 PDT ---
Created an attachment (id=39618)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39618)
OOPS with 2.6.36

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--- Comment #28 from Ben Skeggs <skeggsb at gmail.com> 2010-10-21 15:46:20
PDT ---
Oops, I'm very sorry about that.  Some other work I did introduced a
regression
on a couple of IGP chipsets.  Can you retry latest git?

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--- Comment #29 from Felix Leimbach <felix.leimbach at gmx.net> 2010-10-22
13:12:28 PDT ---
Latest git runs fine, thank you Ben.

These problems from comment #27 remain but I've opened a new bug #31058.

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--- Comment #30 from Felix Leimbach <felix.leimbach at gmx.net> 2010-10-22
13:13:17 PDT ---
> These problems from comment #27 remain but I've opened a new bug
#31058.
Typo: comment #17 not #27

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Marcin Slusarz <marcin.slusarz at gmail.com> changed:

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

--- Comment #31 from Marcin Slusarz <marcin.slusarz at gmail.com>
2010-10-23 02:47:01 PDT ---
Great!

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https://bugs.freedesktop.org/show_bug.cgi?id=29171

Felix Leimbach <felix.leimbach at gmx.net> changed:

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

--- Comment #32 from Felix Leimbach <felix.leimbach at gmx.net> 2011-01-23
07:00:06 PST ---
REOPENing because this bug still happens as of vanilla kernel 2.6.38-rc2.
It is fixed in the nouveau tree though.

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--- Comment #33 from Ben Skeggs <skeggsb at gmail.com> 2011-01-23 15:16:11
PST ---
Err, what branch of the nouveau tree does this work on?  drm-nouveau-staging is
currently the main development branch, and is 2.6.38-rc2 + a couple of other
bits.  If it doesn't work there, can you bisect it back the where it broke
again?

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Felix Leimbach <felix.leimbach at gmx.net> changed:

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

--- Comment #34 from Felix Leimbach <felix.leimbach at gmx.net> 2011-02-20
13:33:00 PST ---
It works in 2.6.35-rc5. Marking RESOLVED.

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