hybrid-graphics-linux team mailing list archive

[Moshe Nissim <mnissim@xxxxxxxxx>]

Dell Latitude E6420
test_off.sh succeeds in acpi_call:
 \_SB.PCI0.PEG0.VID._OFF

screen goes blank


 lspci:
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation
Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09)
(prog-if 00 [VGA controller])
01:00.0 VGA compatible controller [0300]: nVidia Corporation GF108 [Quadro
NVS 4200M] [10de:1056] (rev a1) (prog-if 00 [VGA controller])

with Optimus enabled in BIOS, Xorg with nvidia (binary) driver fails to
start:


 [  7302.936] (--) NVIDIA(0): Connected display device(s) on NVS 4200M at
PCI:1:0:0
[  7302.936] (--) NVIDIA(0):     none
[  7302.938] (EE) NVIDIA(0): No display devices found for this X screen.


 full ACPI tables attached here:

https://bugs.launchpad.net/lpbugreporter/+bug/752542/+attachment/2166441/+files/Latitude%20E6420.tar.gz