[Nouveau] [Bug 25966] New: nv25 : rxvt scrolling is very slow

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25966

           Summary: nv25 : rxvt scrolling is very slow
           Product: xorg
           Version: 7.5
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: castet.matthieu at free.fr
         QAContact: xorg-team at lists.x.org


Hi,

using rxvt 2.7.10 (from debian sid) has some issue with nouveau :
- opening a new terminal, 
- filling it with data (dmesg for example), 
- and then scrolling with the mouse is :
  - slow (we can see a latency)
  - Xorg eat 100% of cpu

There no such problem with nvidia blob (and nv driver IRRC).


Oprofile give me :

    62336 51.8948 libpixman-1.so.0.16.4
    22927 19.0867 libfb.so
    16548 13.7762 no-vmlinux
     6297  5.2423 Xorg

unfortunately I don't have debug symbol.


May be it is related to https://bugzilla.redhat.com/show_bug.cgi?id=538467 ?


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