https://bugzilla.kernel.org/show_bug.cgi?id=111351
--- Comment #9 from Aaron Lu <[email protected]> --- I checked the dmesg you attached at redhat bugzilla, and 8086:191b suggests that you have a skylake GPU. If you have to use nomodeset to make it boot, I would say this is a GPU driver issue. Google 8086:191b showed me this: https://bbs.archlinux.org/viewtopic.php?id=204862 I think you can try the suggestions there: " i915.preliminary_hw_support=1 or install 4.3 kernel. You have a Skylake CPU, and integrated GPU was not enabled by default in 4.2 kernel. " Your attached dmesg suggests you are using "nomodeset" with "i915.preliminary_hw_support=1", which doesn't make much sense: my understanding is that nomodeset asks GPU driver to not do anything about the GPU card, so adding more support by specifying i915.preliminary_hw_support=1 isn't helpful. And it looks like Jozef can boot the computer to console mode at least without nomodeset, is it the same case for you? If so, then the i915 driver seems to work to some extent at least. Anyway, I have no experience in GPU driver and I have no idea which driver of the two is supposed to be used. The i915 bugzilla is at: https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel They may have some idea what to do with your laptop regarding the GPU issue. The backlight on Intel platforms with Intel GPU is taken care of by the GPU driver, i.e. i915 nowadays instead of ACPI, so when you can boot the laptop without using nomodeset but the backlight still doesn't work, you should let them know too. Under current situation, there is nothing we can do about backlight: the i915's interface is not created due to nomodeset, the ACPI video's interface is not created too due to i915 is not working(yes, ACPI video's interface requires i915 working on Intel platforms), there is nothing we can do to fix the backlight issue without solving the GPU issue first(and as Jozef's post indicates, once the i915 driver is working, the backlight will be working too). -- You are receiving this mail because: You are watching the assignee of the bug. ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
