I915 did not work whit modset=1

[Jani Nikula]

On Mon, 23 Dec 2013, der-b <der-b at der-b.com> wrote:
> Hello,
>
> i got a new Notebook with an Intel Core i7-3689Y whit a Intel HD 
> Graphics 4000. I got a blank screen while booting but I could use ssh. 
> This happened each time, when I enabled CONFIG_I915_KMS in the kernel 
> config (modeset=1). Setting the option "invert_brightness=1" solved the 
> problem.

Hi Bernd -

The i915.invert_brightness parameter has only ever been needed on some
gen4 Acer laptops; I suspect this is something else.

Please drop that parameter, and try one of the v3.13-rc kernels or
video.use_bios_initial_backlight=0 module parameter.

If those don't help, please file a bug on Product=DRI,
Component=DRM/Intel as instructed in [1].

BR,
Jani.


[1] https://01.org/linuxgraphics/documentation/how-report-bugs

>
> I attached the "lspci -s 00:002 -nn -v" output.
> I use the gentoo kernel 3.10.17.
>
> I hope this helps you a little bit.
>
> Kind regards,
>
> Bernd Lehmann
>
>
> 00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core 
> processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA 
> controller])
>      Subsystem: Lenovo Device [17aa:3977]
>      Flags: bus master, fast devsel, latency 0, IRQ 42
>      Memory at e0000000 (64-bit, non-prefetchable) [size=4M]
>      Memory at d0000000 (64-bit, prefetchable) [size=256M]
>      I/O ports at 2000 [size=64]
>      Expansion ROM at <unassigned> [disabled]
>      Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
>      Capabilities: [d0] Power Management version 2
>      Capabilities: [a4] PCI Advanced Features
>      Kernel driver in use: i915
>      Kernel modules: i915
>
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-- 
Jani Nikula, Intel Open Source Technology Center