Arch Linux

atrotors

Member

Registered: 2015-07-20

Posts: 9

Laptop display not detected

Hi,
After upgrading my kernel to 4.12.3 my laptop display is not detected by xrandr anymore.
Connecting a HDMI cable works just find and I can see the intel driver and kernel module are working just fine.
But xrandr only detects the HDMI output and not the laptop display (it was called eDP-1 idk if that's relevant or not)
My laptop is a zenbook ux305.
I don't know what else to do.
I might downgrade my kernel for now and try my luck with the next version.

atrotors

Member

Registered: 2015-07-20

Posts: 9

Re: Laptop display not detected

here's lspci output:

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07) (prog-if 00 [VGA controller])
	Subsystem: ASUSTeK Computer Inc. Device 1000
	Flags: bus master, fast devsel, latency 0, IRQ 127
	Memory at de000000 (64-bit, non-prefetchable) [size=16M]
	Memory at c0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at f000 [size=64]
	[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
	Capabilities: [40] Vendor Specific Information: Len=0c <?>
	Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
	Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
	Capabilities: [d0] Power Management version 2
	Capabilities: [100] Process Address Space ID (PASID)
	Capabilities: [200] Address Translation Service (ATS)
	Capabilities: [300] Page Request Interface (PRI)
	Kernel driver in use: i915
	Kernel modules: i915

and xrandr output

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 530mm x 300mm
   1920x1080     60.00*+  50.00    59.94    59.99  
   1920x1080i    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1366x768      59.79  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
VIRTUAL1 disconnected (normal left inverted right x axis y axis

nikonaum

Member

Registered: 2013-02-10

Posts: 6

Re: Laptop display not detected

I have similar problem but reversed, my laptop display works but my external HDMI monitor doesn't. It happen after kernel update to 4.12.3. I enabled my testing repo nd updated to kernel 4.12.4 but same problem.

sunnyraj

Member

Registered: 2015-01-19

Posts: 3

Re: Laptop display not detected

I am also facing the reverse problem, external display is not working through HDMI.
I do not see the "VIRTUAL1 disconnected" line in the xrandr output after the upgrade.

sunnyraj

Member

Registered: 2015-01-19

Posts: 3

Re: Laptop display not detected

I tried this link and it worked for me.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,808

Re: Laptop display not detected

Okay, this has turned to a thread hijacking.  The OP is concerned with the LVDS display, not the HDMI outputs.  When the HDMI first came up, I said nothing because the assessment that it might be the other side of the same coin had merit.
It is starting to seem this is not so.  If there are HDMI issues, follow the link above, but do not continue here -- UNLESS -- there is evidence that the phenomena are related.

Thanks.
https://wiki.archlinux.org/index.php/Co … _hijacking

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