Public bug reported: I've got an Acer Aspire V5-551G with a 64-bit AMD processor with dual boot, Windows 10 and Ubuntu 16.10.
Ubuntu can be started and runs without problems with Linux kernel 4.4.0-45. When I try to start with any of the 4.8.0 kernels delivered with regular Ubuntu updates, they all hang after printing Läser in Linux 4.8.0-34-generic ... Läser in initial ramdisk ... Sorry for the partly Swedish text. I guess that the lines would start with "Loading" instead of "Läser in" on an English version. The behaviour is the same with all 4.8.0 versions up to the latest 4.8.0-34 and with -generic, -generic (upstart) and -generic (recovery mode). After a while the fan runs at full speed, as if the processor is working hard, but nothing happens. After I've tried in vain to start with Linux 4.8.0-xx, and then starts with 4.4.0-45, the following errors are usually printed: [ 2.511733] usb 4-3: string descriptor 0 read error: -22 [ 3.841872] [drm:radeon_scpi_init [radeon]] *ERROR* Cannot find backlight controller /dev/sda7: clean, 807007/9363456 files, 7364300/37423360 blocks [ 21.335117] usb 4-3: string descriptor 0 read error: -22 When a successful start has not been immediately preceded by a failed start, only the line beginning "/dev/sda7" is printed. I have previously commented on bug #1635447. As recommended there, I've also tested with the upstream kernel 4.10-rc3. It worked just as bad as 4.8.0. I tried to report this bug with 'ubuntu-bug linux' after I had booted with the 4.4.0-45 kernel, but I couldn't. It said that linux-image-4.4.0-45- generic is not an official Ubuntu package. ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1659340 Title: Linux kernel 4.8 hangs at boot up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1659340/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs