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I just installed Ubuntu Studio 18.04.1 and I experience some a massive mouse lag after a while (this question) This happens with 4.15 lowlatency kernel Ubuntu Studio is shippped with. Since I ran out of ideas and wanted to try the generic kernel I installed 4.15.0-20 headers and image. I can boot, but I won't get full resolution on my screen and WiFi device is not available.

How come? Which extra packages do I need to install or remove in order to get this working?
In both of my last OSs Ubuntu 14.04 and Ubuntu Studio 14.04 I had several generic, lowlatency & rt-preempt kernels installed, and switching between them never was an issue.

Devices:
RTL8188CE 802.11b/g/n WiFi Adapter
AMD Radeon HD 6620G graphics adapter (default driver, only LVDS screen used)

Edit I tried all generic kernels up to 4.15.0-32 to no avail..

ronso0
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2 Answers2

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Open a terminal with Ctrl+Alt+T. After the $ prompt type:

sudo apt update
sudo apt upgrade

Your kernel should be automatically updated to the most recent version 4.15.0-32 I believe.

If you see messages the new kernel is installed, you can activate it by rebooting so type:

sudo reboot

If you don't get the most recent kernel installed post a comment below.

NOTE: I've had bad luck with the 4.15 kernel chain on my laptop (Skylake), eg won't suspend, occasional keyboard 5-10 second freeze and won't suspend with three monitors. So I'm using 4.13 kernel chain instead.

WinEunuuchs2Unix
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  • That apt/apt-get move wouldn't work for me. I tried pretty much all 4.15 kernels from the official repo (via Synaptic), they suffer the same bug. And the repos don't offer 4.16 kernels, that's why a hint to kernels source might help others. – ronso0 Sep 17 '18 at 23:59
  • @ronso0 Sorry I'm confused by apt move or apt-get move I don't know anything about those two commands... Some kernels are broken for apt remove and apt-get remove for the last few months but a fix is in for that. (apparently). Is that what you are referring to? – WinEunuuchs2Unix Sep 18 '18 at 00:35
  • "move" refers to some kind of apt/apt-get "action" like `apt-get update && apt-get upgrade. sorry for the confusion.. – ronso0 Sep 19 '18 at 06:02
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I got WiFi and graphics working with 4.16.0-041600-generic headers & image from http://kernel.ubuntu.com/~kernel-ppa/mainline/

For some reason (I don't have time to investigate) 4.15.0-x-generic has problems with realtek and amd gpu drivers on my machine(1), whereas 4.15.0-x-lowlatency works out of-the-box

(1) Thinkpad Edge 525 12003NG

ronso0
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