Join Log in
Score:1
Kenneth Kong avatar Ubuntu

Internal Display Shows Up Only After Logout Ubuntu 18.04

my flag
Kenneth Kong

***Update 1:

I did steps 1 and 3 listed below on a clean Ubuntu 18.04/20.04 and the issue (show up only after logout) didn't appear anymore on both Ubuntu versions.

Note that the linux kernel is specifically 5.11.14 because I tried some older and newer versions and all of them failed.

***Update 2:

I just did a software update on Ubuntu 20.04 and there's black screen on my built-in monitor again, like installing the wrong nvidia driver I experienced before.

Solution:

  1. Open up 'Software & Updates'
  2. Go to 'Additional Drivers'
  3. Choose nvidia-driver-510 (proprietary, tested).

Main problem:

Every time I reboot and enter Ubuntu 18.04 (I set autimatically login), my internal monitor (165 Hz) keeps black screen (completely black) while the external monitor (60 Hz) via HDMI works well. I feel the internal monitor is working at that moment from moving my cursor to that monitor.

I also notice the display in this situation (account is locked and display is off because of screen saver) is weird: enter image description here

After logging out once, the internal monitor works well (it shows up at the moment of logging out).

I've checked the following:

enter image description here

enter image description here

The values in the above two pictures are the same in having the black screen or not.

I can use Ctrl+Alt+Del to logout when I only have the internal monitor / using it as the primary monitor.

However, I want to solve the problem but I have no idea where the problem is. Please help~~~

Long story:

I got a new laptop, Alienware m15 R5, with AMD Ryzen 7 5800H and NVIDIA GeForce RTX 3060, 6 GB, GDDR6, and I got the problem of installing Nvidia driver for the graphic card.

After a long research of setting up the Nvidia driver, I realised the essential steps I did to get the driver works:

  1. install kernel 5.11.14
  2. copy all green_sardine* files from https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/amdgpu to /lib/firmware/
  3. Disable "hybrid graphics / advanced optimus" in BIOS
  4. Switch from gdm3 to lightdm display manager
238
0 + 0
ru flag
Scott Deagan
Hey! Unrelated, but I'm thinking about getting the M15r5 to use as a Linux workstation. Have you got everything working okay? Why are you using Ubuntu 18.04 instead of 20.04 (or later)? How loud are the fans? In the BIOS, is there an "iGPU ONLY" mode? If not, can you completely power down the Nvidia GPU so it doesn't draw any power?
0
Reply
Kenneth Kong avatar
my flag
Kenneth Kong
I've got everything working now, on both Ubuntu 18.04 and 20.04. I used 18.04 in last semester because one of the courses required for ROS melodic. // The fans are fine. They're loud only when I run heavy stuff. Normally they're quiet 90% of the time. // I didn't see iGPU related stuff. // I think it's possible to disable nvidia GPU. Some of my classmates did, so I'm quite sure it's possible.
1
Reply
ธงชาติไทย
Elon Musk
I sit in a Tesla and translated this thread with Ai:

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.