[Bug 57350] New: [nouveau, linux-3.7-rc] Broken cursor and kernel log swamped with "PAGE_NOT_PRESENT" errors - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 57350] New: [nouveau, linux-3.7-rc] Broken cursor and kernel log swamped with "PAGE_NOT_PRESENT" errors
Date: Tue, 20 Nov 2012 22:49:18 +0000	[thread overview]
Message-ID: <bug-57350-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=57350

          Priority: medium
            Bug ID: 57350
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [nouveau, linux-3.7-rc] Broken cursor and kernel log
                    swamped with "PAGE_NOT_PRESENT" errors
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: bonbons67@internet.lu
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/other
           Product: DRI

On a MacBookAir with GeForce 9400M (C79) when X starts after booting (using
Enlightenment with compositing) a horizontal bar in the middle of cursor (about
1/3 of cursor height) is transparent instead of showing cursor.

At the same time, kernel log is being filled with following error:
nouveau E[     PFB][0000:02:00.0] trapped read at $addr on channel $fixed_addr
BAR/PFIFO_READ/FB reason: PAGE_NOT_PRESENT

$fixed_addr is always the same (0x0000fee0) and $addr changes each time (e.g.
0x000040fe00 then 0x000040fe0c then 0x000040fe14 and continues incrementing)

Doing a suspend to ram and resume makes the cursor show correctly and error
message not appearing anymore in kernel log.

Software versions:
 linux-3.7-rc5, linux-3.7-rc6
 xorg-server-1.13.0
 xf86-video-nouveau-1.0.4
 libdrm-2.4.40
 mesa-9.0

It was also the case with xorg-server-1.12.2, xf86-video-nouveau GIT snapshot
from march 2012, libdrm-2.4.33, mesa-8.0.3) but did not happen with this setup
with older kernel (linux-3.5.x, not sure anymore about linux-3.6.x)

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