[Bug 35457] New: [rs690m] Graphics corruption with ati x1200

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Mar 19 23:24:50 PDT 2011


           Summary: [rs690m] Graphics corruption with ati x1200
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: aeon.descriptor at gmail.com
         QAContact: xorg-team at lists.x.org

This is a severe issue, that prevents me (and a decent number of others) from
using accelerated graphics.  

This bug has the following behaviors:

* Corrupts the displayed graphics of every running program (as far as I can
* Often corrupts the pointer graphics
* Corrupts fonts
* Corrupts the terminal display with noise from X, if you switch to a terminal
* Exists in accelerated and unaccelerated modes, but is marginal when not
* Is made worse by KMS
* Is made worse by Compositing.
* Affects a rather large number of users (many with the rs690/x1200/x1250
cards, which are common in netbooks)

The previous workaround has been to disable KMS, which I believe somehow caused
the radonhd driver to be used (uncertain about this).  Either way, it brought
the garbage to a usable level, and still allowed acceleration.  However, that
is not the case now.  Using nomodeset results in a non-accelerated desktop.

Please let me know what pieces of information I should supply, and how I can be
of assistance regarding this.

Note that glxinfo currently (with kms disabled) reports me to be using SGI and
Mesa.  Direct Rendering is "Yes", but it's actually using software, yes?.  Even
with this totally different driver set, I still sometimes get the corruptions
(particularly after a long time running).

Is it possible that some fundamental thing (like a base memory address, or how
much shared memory is to be used, or something) is being misreported and
causing all these issues?   This seems to be a very difficult bug to sort out,
as it has been around a while.

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