Ah, that now makes sense. And since I could reach and search the older git trees today I found that we had only one SAUCE patch to vesafb in Saucy/13.10. Which was a combination of previous patches but titled as modularization patch. So having vesafb as a module was special and since Trusty/14.04 we did not need it to be a module any longer. So the patch was dropped without noticing the mtrr part.
As a quick band-aid for production systems you could add "video=vesafb:mtrr:3" to standard kernels, which should result in the same. Though I think we should reintroduce the write-combining as default. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1434581 Title: Console extremely slow with 3.13 and newer kernels for certified servers with Matrox G200er2 or similar To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434581/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
