I915 did not work whit modset=1

[der-b <der-b@der-b.com>]

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.

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