Messages in this thread | | | Date | Tue, 19 Feb 2013 10:08:49 -0800 | From | Jesse Barnes <> | Subject | Re: i915 black screen introduced by ACPI changes |
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On Sun, 17 Feb 2013 20:43:47 -0800 Chris Li <lkml@chrisli.org> wrote:
> My Lenovo Y580 laptop with FC18 start to get black screen after the kernel > upgrade to 3.7.xxx > > The black screen happens about the time kernel switch to using VT console. > At the point of black screen, no response of cap locks key led no network > connection. The machine seems dead.
Can you set up netconsole and see if you can get any output from the boot, if we're lucky maybe you'll see a panic...
> The CPU is i7 and it has two video card. The Intel build-in video card > and Gtx 660M Nvidia card. > > This is very annoying. I did some poking around it: > - It was fine on the FC18 3.6.xxx kernel before the upgrade. > - The black screen exists with FC18 3.7.xxx kernel > - The black screen also exists in latest tip of linux-2.6. > - Switch to multi-user mode booting does not get rid of the black screen. > - Get rid of the "rhrb quit" does not help either. > - When the black screen happen, cap lock LED does not response to cap locks. > - No networking when black screen happen. The only thing to do is > reboot the system. > - Adding "i915.modeset=0" will allow the kernel to boot into GUI login. However, > logout of X will cause the machine to hang similar to the black screen. > - Suspend and resume will get stuck at the black screen with"i915.modeset=0". > - Kernel console and X is using the Intel driver for display.
I don't know about the ACPI change mentioned, but ACPI is involved in dual-GPU configurations. Maybe the change affected the default behavior and pointed more functions at the nVidia device rather than the Intel?
-- Jesse Barnes, Intel Open Source Technology Center
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