I found, that my problem was related to Ext4 and not with video drivers. When my computer starts to write into lots of small files, computer just freezes.
-- [RV350] system freeze randomly, need hard reset https://bugs.launchpad.net/bugs/349229 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