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[Rolf Leggewie <1083032@xxxxxxxxxxxxxxxxxx>]

raring has seen the end of its life and is no longer receiving any
updates. Marking the raring task for this ticket as "Won't Fix".

** Changed in: xserver-xorg-video-savage (Ubuntu Raring)
       Status: Fix Committed => Won't Fix

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https://bugs.launchpad.net/bugs/1083032

Title:
  Video driver not working for Savage chipset

Status in X.Org X server:
  Fix Released
Status in xorg-server package in Ubuntu:
  Fix Released
Status in xserver-xorg-video-savage package in Ubuntu:
  Fix Released
Status in xorg-server source package in Raring:
  Confirmed
Status in xserver-xorg-video-savage source package in Raring:
  Won't Fix

Bug description:
  [Impact]
  For xserver-xorg-video-savage: Display corruption in X on all Savage-equipped laptops such as Thinkpad T22, making the system unusable.
  For xorg-server: System lockup on boot.

  [Test Case]
  Attempt to boot a system with one of the affected Savage cards; the Thinkpad T22 is at least one such system.

  The display will be corrupted beyond usability.

  Install xserver-xorg-video-savage and xserver-xorg-core from proposed,
  and you should have a usable X session.

  [Regression Potential]
  The X server patch touches only the DRI1 initialisation codepath; this is not used for the vast majority of systems, so breakage is low-impact. Breakage here would most likely manifest as an Xserver crash on startup. (Most likely any driver using DRI1 is broken without this patch, but since DRI1 is mostly used for mesa and our mesa does not support DRI1 any longer, this is not very visible. However, the savage driver uses DRI1 for 2D acceleration as well.)

  The savage patch switches the default acceleration method to EXA (from
  XAA) and adds some fixes to EXA support. We don't build XAA support
  into the X server any more, so switching away from it means enabling
  EXA acceleration(*), which can cause pretty much arbitrary problems,
  but is unlikely to. In any case, problems would be restricted to users
  of xserver-xorg-video-savage.

  *) The build-without-XAA fallback to no acceleration is broken, so EXA
  is the best way out of this. EXA has been reported to work well, and
  is now enabled by default upstream (the patches in this report are
  from upstream). The user can still disable (EXA) acceleration in
  xorg.conf, which should work out fine when done this way.

  [Original Report]

  When installing 12.10 on our Thinkpad T22 laptops the display does not work. 12.04 works fine.
  xserver-xorg-video-s3 is version 1:0.6.5-0ubuntu1
  xserver-xorg-video-savage is version 1:2.3.6-0ubuntu1
  I don't know if these are the packages involved but they are the ones that I suspect may be involved.
  This T22 model (and many other thinkpads from that era) use the "S3 Savage IX8" chipsets.

  Using the info from this link makes the display work.
  =====
  http://www.physics.wustl.edu/~alford/thinkpad/T23_F17.html

  Xorg :1 -configure
  # ignore Configuration Failed message
  cp xorg.conf.new /etc/X11/xorg.conf

  Edit the /etc/X11/xorg.conf file: uncomment Option "DisableTile" in the Section "Device" that contains the Savage driver options.
  ============

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