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Old 10-22-2018, 11:41 AM   #1
RandomTroll
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Display problems in 4.19


I just built 4.19 this morning. Now my non-X display doesn't update properly. Artifacts from previous screens are left behind. It may only happen in apps that use ncurses.

Does anyone else see this?
 
Old 10-22-2018, 11:55 AM   #2
cwizardone
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No problems of any kind with the 4.19.0 kernel from, https://dusk.idlemoor.tk/
 
Old 10-24-2018, 11:53 AM   #3
Lenard Spencer
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Quote:
Originally Posted by RandomTroll View Post
I just built 4.19 this morning. Now my non-X display doesn't update properly. Artifacts from previous screens are left behind. It may only happen in apps that use ncurses.

Does anyone else see this?
I upgraded my slackware64-current partitions on both my big boxes last night, and on the vanilla partitions I have set up for clean builds, I get nearly complete lockups in X. As long as I stayed in the console (no X), I was fine. Had to revert back to 4.14.78 on those partitions to fix it. I think something got broken in nouveau between X and the kernel. With the proprietary Nvidia driver I have no such problems. Both my boxes are AMD FX 8-core with 32G RAM and Geforce GTX-1050ti cards.
 
Old 10-29-2018, 05:35 AM   #4
bodge99
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Hello All,

Having Xorg crashes with kernel 4.19 in Mint 19 (from ukuu) and Slackware-current (on the same laptop). I've reverted to 4.18.16 on both for now.

Nothing showing in the logs.

Intel Core i7-8550U with UHD620 GPU.

Last edited by bodge99; 11-11-2018 at 01:10 PM.
 
Old 11-11-2018, 08:29 AM   #5
bodge99
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I can now run a graphical desktop with kernel 4.19.x, although I do have to reduce the screen resolution.
The laptop's native screen resolution is 1920x1080 (16:9). I'm using the nearest 16:9 resolution which is 1600x1024 on my machine.

It's usable for now, but I had to set up auto logins with each distro installed. This is due to a virtually unusable screen at 1920x1080.

More investigation pending...

Bodge99

Last edited by bodge99; 11-13-2018 at 07:00 AM.
 
Old 11-12-2018, 05:48 PM   #6
bodge99
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I've just added kernel 4.19.1 and Cinnamon to a clean install of Devuan Ascii.

This involved making direct copies of everything relevant from my Mint 19 installation (kernel, firmware, headers & modules).
Yes, O.K. This method is not exactly the recommended one, but I just wanted to do a quick test.

The default screen resolution of 1920x1080 works perfectly fine... So it looks like my particular problem might be down to other things beyond the kernel.

BTW. Devuan is rock solid and very fast...
 
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Old 11-14-2018, 12:37 PM   #7
RandomTroll
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The problem stopped with kernel 4.19.2. The only difference in the .config was the disappearance of CONFIG_CRYPTO_SPECK=m , which should be irrelevant, and appeared in 4.17.1 anyway.
 
Old 11-14-2018, 01:53 PM   #8
bodge99
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Not solved for me..

Identical problems with 14.9.2 and 4.20.0-rc2.
 
Old 12-18-2018, 08:59 AM   #9
bodge99
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I've had a further look at this one.. (Intel GPU, so probably not the same problem as the original post).

Looking at dmesg from Slackware, I noticed this:

code/
[ 16.462295] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
/code

A little googling lead to a workaround of adding the following to the kernel boot parameters (I use Grub2).

code/
intel_idle.max_cstate=4
/code

It seems to work.. I'll look more closely at this when I've got the time.

Just for info for anyone with newer Intel GPU problems.
 
  


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