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#1 2022-06-14 03:18:50

DMCoder
Member
Registered: 2020-06-30
Posts: 5

Laptop internal screen suddenly stopped working

My setup is as follows: I have a laptop with an NVIDIA 1050 graphics card. I run it with an external graphics monitor connected, and run in the "NVIDIA Graphics only mode".
Yesterday, all of a sudden the internal screen stopped working after booting - prior to booting into Linux, the GRUB screen shows up on the internal monitor.

`lshw` detects the internal and the external monitors:

*-display
             description: VGA compatible controller
             product: CoffeeLake-H GT2 [UHD Graphics 630]
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 00
             width: 64 bits
             clock: 33MHz
             capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:128 memory:b2000000-b2ffffff memory:80000000-9fffffff ioport:5000(size=64) memory:c0000-dffff

*-display
                description: VGA compatible controller
                product: GP107M [GeForce GTX 1050 Mobile]
                vendor: NVIDIA Corporation
                physical id: 0
                bus info: pci@0000:01:00.0
                version: a1
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
                configuration: driver=nvidia latency=0
                resources: irq:137 memory:b3000000-b3ffffff memory:a0000000-afffffff memory:b0000000-b1ffffff ioport:4000(size=128) memory:b4080000-b40fffff

However, `xrandr -q` detects only the external one:

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 476mm x 268mm
   1920x1080     60.00*+  74.97    59.94    50.00
   1680x1050     59.95
   1600x900      60.00
   1440x900      59.89
   1280x1024     60.02
   1280x800      59.81
   1280x720      60.00    59.94    50.00
   1024x768      60.00
   800x600       60.32
   720x576       50.00
   720x480       59.94
   640x480       59.94    59.93

I can confirm that the NVIDIA driver is indeed being used, from the output of `glxinfo -B | grep NVIDIA`:

OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: NVIDIA GeForce GTX 1050/PCIe/SSE2
OpenGL core profile version string: 4.6.0 NVIDIA 515.48.07
OpenGL core profile shading language version string: 4.60 NVIDIA
OpenGL version string: 4.6.0 NVIDIA 515.48.07
OpenGL shading language version string: 4.60 NVIDIA
OpenGL ES profile version string: OpenGL ES 3.2 NVIDIA 515.48.07

How may I go about troubleshooting this?

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#2 2022-06-14 05:47:16

seth
Member
Registered: 2012-09-03
Posts: 29,732

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