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The screen of my laptop goes black when it wakes up from suspend. I don't think that the laptop freezes because I can do REISUB. I suppose it's a problem with the brightness, but I could be wrong.

Some of the things I've tried include turning up the brightness via the corresponding shortcuts, booting using nomodeset, pressing the Ctrl+Alt+F1-F12 shortcuts, and uninstalling Redshift. But, none of them did anything.

I guess I could try going into TTY, but I don't know what I'd enter.

A few things that might be worth noting is that I have Redshift installed and I'm on Lubuntu 21.04.

Regarding my graphics card and drivers, I hope that the output of lspci -nnk | grep -i vga -A3 [1] provides enough information:

00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 500 [8086:5a85] (rev 0b)
        DeviceName:  Onboard IGD
        Subsystem: Intel Corporation HD Graphics 500 [8086:2212]
        Kernel driver in use: i915

Any ideas?

[1] BuZZ-dEE, “You can use the command lspci -nnk | grep -i vga -A3 | grep ’in us to see what video driver is in use on your system.,” Ask Ubuntu, Feb. 14, 2013. How can I find what video driver is in use on my system? (accessed Jun. 03, 2021).

  • 2
    Graphics card and drivers? – ChanganAuto Jun 02 '21 at 18:41
  • I updated the post to provide information about that. Let me know if it fulfills your request. @ChanganAuto –  Jun 03 '21 at 16:27
  • It does, thank you and +1. Unfortunately it rules out my original hypotheses of it being related with Nvidia and incorrect drivers. – ChanganAuto Jun 03 '21 at 16:29
  • Do any other possible reasons for my issue come to your mind? @ChanganAuto –  Jun 03 '21 at 19:37
  • Sorry no, not really. Update UEFI just in case. – ChanganAuto Jun 03 '21 at 19:39
  • It's ok. I'll try doing that. Thanks! –  Jun 03 '21 at 22:03
  • Have you tried switching to text terminal (ctrl+alt+F4 for example) then back to GUI.. I've had that help, though if it doesn't I tend to explore using the terminal & resolve the issue with a kill. On wake, the screen should be locked by xscreensaver that may require you to hit a key to wake it (so it asks for a password). – guiverc Jun 05 '21 at 23:20
  • Yes, I've tried going into text terminal, then back to GUI, but I got nothing. I'll try the other thing you said. @guiverc –  Jun 06 '21 at 19:07
  • Hey, sorry to trouble you. I'm having a hard time finding anything on updating BIOS/UEFI. I understand that I'm supposed to read the documentation of the vendor of my BIOS/UEFI. The vendor of my BIOS/UEFI seems to be American Megatrends. However, their website doesn't seem to have anything on updating BIOS/UEFI. There are a handful of online articles on how to do this, but I'm skeptical about them. Could you give me some pointers on how to find reliable information? @ChanganAuto –  Jun 06 '21 at 19:18
  • You should find the latest version at the laptop's manufacturer, not the generic firmware provider, along with all other drivers and additional software. – ChanganAuto Jun 06 '21 at 19:30
  • Ah, I see. Thank you very much! I'll give that a shot. @ChanganAuto –  Jun 06 '21 at 19:49

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