** Description changed: - [Impact] - For xserver-xorg-video-savage: Display corruption in X on (at least) Thinkpad T22 laptops, making the system unusable. + [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. + [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. Since we don't build XAA - support into the X server any more, so switching away from it means - enabling 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. + 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. ============
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1083032 Title: Video driver not working for Savage chipset To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1083032/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
