[Bug 12626] New: Interlaced modi broken in latest git

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=12626

           Summary: Interlaced modi broken in latest git
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: laga at laga.ath.cx
         QAContact: xorg-team at lists.x.org


Hello,

I'm using my PAL modeline to drive my TV directly over the VGA connector. When
upgrading from Ubuntu Feisty to Ubuntu gutsy, this stopped working for me. The
first half of the screen is shown fine, then there's a horizontal black bar and
then the first half of the screen is shown again in the lower half of my TV
set. I can tell that it's divided in the middle because I see half of the mouse
pointer which is usually placed in the middle of the screen.

When I downgraded from xserver-xorg-video-ati-6.7.193 to
xserver-xorg-video-ati-6.6.3, it started to work again. In an attempt to narrow
down the cause, I got xf86-video-ati from git. I have 82 revisions left for
testing, but I'll provide my interim results here:

Commit 2618cf2aa8ed76411b943eb90c95869814c2f151 from May still works
Commit 0abce69f0d826a7ca1a41d963cd4730b6e01c145 from April is broken

I didn't use git-bisect for that because I'd keep hitting revisions which
wouldn't compile properly or exhibited other problems.

So, if anyone has a fix or knows which revisions might be interesting, I'd
appreciate any input. If not, I'll give git-bisect another try tomorrow (with
my  narrowed-down set of revisions this time).

Thanks,

Michael


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