https://bugs.freedesktop.org/show_bug.cgi?id=98149 --- Comment #3 from Dino --- Thanks for your kind reply. Here is the dmesg log and vbios.rom from the working kernel 4.2.8. I am aware of that this is an old laptop, I am just curious to find out what is the cause of this bug. -- You are receiving this mail because: You are the assignee for the bug.