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[Bug 564378] Re: Fails to set MTRR for 2D acceleration

 

apport information

** Tags added: apport-collected

** Description changed:

  Binary package hint: xserver-xorg-video-neomagic
  
  Playing DVD or other video results in dropped frames and high CPU usage
  on a Neomagic NM2380 chip (MagicMedia 256XL+). The problem is evident in
  VLC and Totem. This was not the case in Hardy. The difference has been
  traced to the absence of the MTRR setting for video acceleration. This
  bug also exists in Jaunty and Karmic but I have not tested Intrepid.
  
  In Lucid (10.04):
  cat /proc/mtrr
  reg00: base=0x000000000 (    0MB), size=  256MB, count=1: write-back
  reg01: base=0x010000000 (  256MB), size=  128MB, count=1: write-back 
  
  In Hardy (8.04):
  cat /proc/mtrr
  reg00: base=0x000000000 (    0MB), size=  256MB, count=1: write-back
  reg01: base=0x010000000 (  256MB), size=  128MB, count=1: write-back
  reg02: base=0x0fc000000 ( 4032MB), size=    8MB, count=1: write-combining
  
  Entering the command
  echo "base=0xfc000000 size=0x800000 type=write-combining" > /proc/mtrr
  in a terminal will set the MTRR but it will be reset at boot or when the X-server is restarted.
+ --- 
+ Architecture: i386
+ DistroRelease: Ubuntu 10.04
+ InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100406.1)
+ Package: xserver-xorg-video-neomagic 1:1.2.4-2
+ PackageArchitecture: i386
+ ProcEnviron:
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
+ Tags: lucid
+ Uname: Linux 2.6.32-19-generic i686
+ UnreportableReason: This is not a genuine Ubuntu package
+ UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

** Attachment added: "Dependencies.txt"
   http://launchpadlibrarian.net/44505817/Dependencies.txt

-- 
Fails to set MTRR for 2D acceleration
https://bugs.launchpad.net/bugs/564378
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