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Hi!
I'm trying to restore my old notebook. When I loaded archlinux install usb i saw nothing on the monitor. I found that there is a video on another monitor, connected by VGA, but no response on primary at all.
This problem was not solved after installation. It seems like laptop sees both monitors. I can put application's windows on primary monitor, but can't see them.
There is a moment in the beginning of booting arch when the resolution has been changed. At this moment video disappears.
I have samsung np530-u4c with discrete nvidia video card 620m and integrated intel. Only intel card works now.
lspci output (there is really only one string contains "VGA"!):
...
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
....
01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M] (rev a1)
...
/sys/kernel/debug/vgaswitcheroo/switch contains:
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0
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Note: I tried linuxmint liveCD. Everything works with it.
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