[Solved] F27 Gnome (esp. Wayland) very slow after last update (4.14.11)

asked 2018-01-08 12:48:16 +0000

Onox gravatar image

updated 2018-01-09 17:33:43 +0000

Hi,

Last Thursday, I worked a while on Fedora 27 (this is a dual boot system with Windows 10), everything was working fine, and I updated the system with the dnf upgrade command, but didn't reboot at the time, and then I turned off the computer and I haven't booted on Fedora since this morning, where I immediately noticed that everything was extremely sluggish, even on the login screen. The CPU usage is like 90% percent on every core of my AMD Ryzen 1700X and graphically, the Gnome desktop is very slow. My dnf history is as follows:

ID | Command line | Date et time | Action(s) | Modified

 9 | update                   | 2018-01-04 17:58 | E, I, U        |   38 EE
 8 | install code             | 2017-12-30 16:06 | Install        |    2   
 7 | update                   | 2017-12-30 16:01 | I, U           |  161 EE
 6 | install https://download | 2017-12-30 15:54 | Install        |    1   
 5 | install https://download | 2017-12-30 15:53 | Install        |    1   
 4 | install gnome-tweak-tool | 2017-12-30 15:39 | Install        |    2   
 3 | install chrome-gnome-she | 2017-12-30 15:37 | Install        |    2   
 2 | upgrade                  | 2017-12-19 13:59 | I, O, U        |  559 E<
 1 |                          | 2017-11-05 08:29 | Install        | 1568 >E

The installed kernels that I have now:

  • 4.14.11
  • 4.14.8
  • 4.14.6

It was update #7 that installed version 4.14.8, and with that version everything worked fine before update #9, which installed 4.14.11. But now, if I select 4.14.8 on the GRUB boot menu, I have the same huge performance issue. On the login screen, if I choose GNOME on Xorg, then it works much better, but it's still sluggish, and CPU usage is higher than before on idle.

Finally, if I boot on 4.14.6, performance is normal and the Gnome desktop is very smooth, as it was before update #9. So that means that it's probably not the kernel update alone that causes this issue, otherwise it should still work fine with 4.14.8, as it used to before update #9, right?

My graphics card is an nvidia GeForce 1070, and I haven't tried installing the proprietary driver yet.

Also, I cannot rollback my updates, because if I do dnf history rollback 8, I get:

...
No package appstream-data-0:27-7.fc27.noarch available.
Error : A transaction cannot be undone

So it seems that for now I can work by booting on 4.14.6, but what steps should I take to try to solve this problem? Not sure if this problem is related to the Meltdown patch. Thanks in advance

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Comments

You mentioned that your cpu shows 90% utilization. It might be helpful to know what program is using so many cpu cycles. You can use the top command to view that information. Also, GNOME performance is not impacted in a meaningful way by the recent security patches.

darakus ( 2018-01-09 00:14:06 +0000 )edit

Thank you for your answer! I've just edited the title to say that my problem is solved… and I didn’t have anything to do about it. After a couple of additional reboots (which I had already done to try the different kernel versions), everything was back to normal. I had opened the system monitor to check which process was using so much CPU, which was gnome-shell. I have no idea what happened and I am sorry for the now useless post.

Onox ( 2018-01-09 17:40:22 +0000 )edit