Hi, hope somebody can help me fix this kernel problem which affects the following machines: - Clevo P651RA (i7-6700HQ/GTX 965M, part of the P6xxRx family which are also affected) - MSI GE62 Apache Pro (i7-6700HQ/GTX 960M) - Gigabyte P35V5 (i7-6700HQ/GTX 970M) - Razer Blade 14" (2016) (i7-6700HQ/GTX 970M) (BIOS 5.11, 04/07/2016) The kernel freezes if the graphical user session (Xorg & Wayland) is started with a switched off discrete GPU card (NVIDIA). If the discrete GPU is switched off after the graphical session start, then everything works as expected, until the graphical session is restarted. This problem seams to be linked to specific BIOS settings. If the computer is started with the following command line: acpi_osi=! acpi_osi="Windows 2009" then the kernel freeze does not occur anymore. However this required a special ACPI DSDT firmware patch for the Razer Blade 2016 laptop: https://github.com/m4ng0squ4sh/razer_blade_14_2016_acpi_dsdt I strongly recommend to fix this in the kernel and I am ready to help and solve this problem with some help. Here is a link to the GitHub issue with further information: https://github.com/Bumblebee-Project/Bumblebee/issues/764#issuecomment-241212595 Here are some more detailed information: https://github.com/Lekensteyn/acpi-stuff/blob/master/Clevo-P651RA/notes.txt Hope somebody can help. Thanks! Roland Singer -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
