i figured out that problem occurs in most cases when laptop is on battery power.
-- [HARDY] X crashes with 915GM/GMS/910GML (104d:81b8) https://bugs.launchpad.net/bugs/201352 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
