I found a solution for this, at least for my case! I traced the CPU
pinning to ACPI GPE11 (corresponding to IRQ9 in my Mac Pro 1,1) being
hit constantly.
This can be killed permanently by passing "acpi_mask_gpe=0x11" to the
kernel at boot.
I still believe this was first triggered for 20.04 first
Installed:
https://github.com/AdnanHodzic/auto-cpufreq
And sometimes it works and somtimes not.
using the ap fucntion with the script below helps sometimes.
https://github.com/benicovdw/manage-cpufreq/blob/main/manage_governor.sh
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I've seen many of the OP's symptoms too, including pinning one CPU at
100%. Makes the machine unusable. However I can be a little more precise
as to when they started:
- 20.04 was fine at first;
- 20.04 later under kernel 5.13-generic saw the problems start, at which
pointed I switched to low-lat
I can confirm that switching nvidia to on-demand only has resolved all
of the performance issues.
nvidia being used though prime-run script linked above seems to be
working. It is running hotter than I would like, but I have no reason to
believe that is unexpected. There are some glitching issues
On further digging around, I noticed the nvidia temperatures were rising
and utilization was in the 30-40% range when I was doing things
(firefox, terminal, pycharm).
I then remembered that while I had originally configured graphics to use
nvidia only on demand around 20.04, this had reverted to n
The low-latency kernels are solving it for me:
kernel 5.4.0-156-lowlatency on Ubuntu 18.04 as well as
kernel 6.2.0-1011-lowlatency on Ubuntu 22.04 (on the same machine: Dell
Latitude E6540 (2014) ... Intel i7-4600M).
The generic kernels on 18.04 as well as 22.04 just stay at the minimum
freq -
This problem still very much exists on 23.04. Since I can't find a
single 'regular' metric that shows the problem, I can only provide
anecdotal information. Perhaps someone can see a pattern and find a
common thread.
The machine I'm using is an Asus Zephyrus G14 with AMD Ryzen 5 4600HS
NVIDIA GeFo
Well my results from my previous post seems to be short lived as I still
seem to be stuck with a slow system from the console perspective with
running gradle tasks. Not sure what to try next.
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Hi All,
I too have been experiencing a laggy Ubuntu 22.04 on Virtual Box since
upgrading from a previous version. For me I don't normally use the web
browser much as I use my host pcs browser for that, so I cant speak for
how Ubuntu's web browser's performance was before or after upgrading to
22.
I conquer with chris (platoscave). Pretty all my problems went a away
with time by magic. It is obvious that many bugs plagued us and where
fixed by the different projects composing Ubuntu as time passed by.
22.04 just wasn't ready went it came out.
My only issue that remains is when waking up m
I'm on a Dell XPS laptop and many of the problems described above.
sudo apt update && apt upgrade -y
followed by reboot fixed the problem for me.
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I came to find a bug that I logged that was very similar to this one, to
mark it as linked - https://bugs.launchpad.net/ubuntu/+bug/1982560 - but
it's gone! Can't see any history on this. Not even closed, just
disappeared. Where do I see deleted bugs please?
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I came to find a bug that I logged that was very similar to this one, to
mark it as linked - https://bugs.launchpad.net/ubuntu/+bug/1982560 - but
it's gone! Can't see any history on this. Not even closed, just
disappeared. Where do I see deleted bugs please?
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thinkpad p15: all browsers, vscode and other UI apps are terribly slow.I
tried both intel graphics and nvidia graphics. Youtube playback is
jittery. Overall ubuntu 22' performance is sluggish!
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(nvidia 515, pop os 22.04)
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Title:
massive performance issues since 22.04 upgrade
Status in linux package in Ubuntu:
Confirmed
B
Just want to say, I had this same issue, and disabling hardware
acceleration in the discord desktop app's `settings -> advanced` fixed
it for me. dragging any windows was horribly laggy.
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I don't know if it is related with what is happening to me, but all my
drag actions becomes slow / frozen. It appears that the window is
updated internally for each the way the mouse taked (when I am
dragging).
It happens only when I have a lot of things opened. Specially if that
things uses 3D ac
After updating to 22.04 from 20.04, I have experienced the same
performance issues. And adding "inter_iommu=off" did not help. The
laptop is with Intel CPU and integrated graphics, so it seemed like the
correct option.
Investigating a bit further, I notices unusually low CPU temperature
(around 36
Hi to all, I also had perfomance issue, I have a Toshiba C845 with 4
cores i7-3632qm with CPU power manager with top speed 2.9 - 3,2 ghz
I disabled IOMM, thermald, power-profile-daemon and had improvements,
but changing to xorg recovered most of the speed.
In my case seems that the rest of slowne
Had bad performance running in VMware Workstation running on Windows 11
(significant pauses during typing).
Upgraded to
Linux ubuntudev 5.19.17-051917-generic #202210240939 SMP PREEMPT_DYNAMIC Mon
Oct 24 09:43:01 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
which seems to fix the problem
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I just noticed that when I simply move the mouse, gnome-shell CPU jumps
up 30% CPU. For those of you suffering from this problem, this is the
issue to follow: https://gitlab.gnome.org/GNOME/gnome-
shell/-/issues/4130
** Bug watch added: gitlab.gnome.org/GNOME/gnome-shell/-/issues #4130
https:
Three days after I commented here (2022-09-26), after and update with
reboot and switching back to Wayland, I notice a good performance
improvement. I cannot explain why.
I still suffer from Video stuttering and lagging across all players
(probably another bug though) and when my system resume fr
For anyone running into this issue with a modern 10th gen up intel cpu
I'd suggest disabling thermald using systemctl and then rebooting
Do it at your own discretion though, but at least on my lenovo laptop my
system has been running smoothly with no need to disable turbo boost or
iommu
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You r
This dist upgrade is a massive clusterfuck.
I disabled turbo and iommu. No change at all in performance.
I regret the upgrade. The old 20.04 worked nicely.
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I also noted a high usage of RAM. When in idle with no open apps, I have
4.7 GB of RAM used.
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Title:
massive performance issues sinc
Has anybody else noticed some major improvement within the last few
days? I am running on kernel version 5.15.0-47-generic and have now been
running my laptop for 6 days without needing to reboot, and everything
suddenly seems to keep running smoothly. I previously had to reboot
every second day to
I've been having very similar issues on a lenovo legion laptop,
disabling intel_iommu helped but doing so wouldn't give me results as
smooth as windows/manjaro.
One thing that i noticed is that if my cpu (i7 10750h) gets stressed
enough and reach high temperatures Ubuntu will throttle all cores to
Like everyone else, I am experiencing the same issues.
"intel_iommu=off" in Grub does not help.
Here are some symptoms I suffer; not sure if they are related to this
bug or not, but worth mentioning since they all degrade my Ubuntu
experience since I upgraded from 20.04 to 22.04.
- Overall stutte
I upgraded from 20.04.2 to 22.04.1 over the weekend using the normal do-
release-upgrade process I've always used. Since then I notice Firefox
takes 30ish seconds to load. Telegram same. Libreoffice literally 3
minutes to open.
I've tried some of the suggestions in this ticket and the issue remain
I'm also still facing the issue with an 16GB HP laptop. Did a fresh
install on the SSD and when I open edge and chrome together it consumes
a lot of RAM.
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I also have Performance issues, so i managed to get pattern on my machine.
I have a Rycen 5, 32GB Ram and a Nvidia card.
i had 20.04 it was fine, then i did a fresh install for 22.04.
The first 2 days or so i had no trouble, yes it runs a bit laggy but i was fine
with it, then i played a game. It
Same problem here. Thinkpad P14s Gen1, 32GB Ram. Was working fine on
20.04 - and after the upgrade to 22.04.1, everything is totally laggy,
CPU consumption almost always at 100%.
iommu=off made it slightly better, but still not acceptable...
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Same problem, two identical machines (CPU, GPU, RAM size, SSD, etc), one
with 20.04, the other with 22.04 and the difference is almost night and
day. Tried the iommu workaround and didn't seem to make any difference
on improving the performance with 22.04
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Just to say I seem to have the same problem as Henning and that
iommu=off seems to have helped a lot. I even see my cpu go above 2GHz
now!
Lenovo P15s, CPU 1165G7.
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@c-edward-hamer: It is interesting that you mention the issue with
getting 15 of the same letter while typing. Two days ago I switched to
Wayland (from Xorg) to see if that had any impact. There, I had this
problem constantly and switched back to Xorg as a consequence, where I
don't see this. I bel
I am getting this issue on two machines. One Dell 7530 Precision laptop,
I have upgraded 18.04 - 20.04 and 22.04. It is really quite noticeable;
after a few hours I start to notice it. After leaving it for a few days
it gets worse and worse. Even typing this I suddenly get 15 of the same
letter typ
@henning: Thanks for replying to my comment. I actually tried
uninstalling the power-profiles-daemon when I saw the message, but
running like that for the last month has not made any significant
difference to the lag I am experiencing after some hours of use. I have
now reinstalled it, just to be s
I would like to add that I encountered this issue on Ubuntu 22.04 after
a power outage. The conservation mode (power stays at or below 60%) of
my Lenovo Legion 5i was then turned off.
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Working and testing if the kernel livepatch theory that Kprobe registers
as a ftrace handler could be the cause of the problem. But my old I5 is
making this process difficult.
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@uengberg:
in my research for another bug/problem
(https://bugs.launchpad.net/ubuntu/+source/power-profiles-daemon/+bug/1977660 -
I did not yet document it there)
i found out that power profile behaviour is strange and actually i realized
that the settings available in gnome *do* have a short t
For what it is worth, I am experiencing what seems like the exact same
issues as Henning, on a Thinkpad T470s after upgrading from 21.10 to
22.04. I am pretty confident there were no problems at all with 21.10,
now my whole system and especially things like videos running in chrome
gets extremely l
@mruffel:
interesting, I am right now already at 5.15.0-37-generic from:
APT-Sources: http://de.archive.ubuntu.com/ubuntu jammy-updates/main amd64
Packages
I gave up with custom Kernels as it seemed they provide no clear
improvement better then running the ubuntu package with iommu turned of
as y
Hi Prudhvi,
We might be chasing a different issue than just IOMMU being on. Do you
have the same symptoms as Henning? You might be better off filing a new
bug and we can debug your issues specifically.
Henning, are you still building your own kernels? Are things better on
the recently released 5.
Is there any workaround for this issue, i tried this
GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=off", but no improvement in
browser performance.
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BTW: also, as I have an nvidia graphics card in that machine, one could think
something is wrong with the graphics drivers...
But I tried the nvidia drivers as recommended by the driver GUI tool as well as
nouveau. It "feels" like the nvidia drivers are even slightly worse.
On the Ubuntu live U
I have an update on this and quite a bit of more information, even
though not very clear what it means and how to further go on fully
fixing it:
After some more usage i realized that the performance is still pretty
weak when using my desktop system for slightly more "real" work.
I kept getting st
Hi Henning,
That is great news that "intel_iommu=off" on the kernel command line did
the trick.
You can follow this bug to get updates on when we will be disabling
IOMMU by default in the 5.15 kernel. It should be soon, the patches are
already submitted, and reviewed by the kernel team. The next
Hi Matthew,
Yes, that looks very good! have to dig a bit deeper and do some more
actual work, but at the first glance I can do the things that I
described above where impossible!
Thanks a lot!
I tried to build 5.17.7 with the 22.04 config and make olddefconfig
and then bindeb-pkg, but it took ex
Hi Henning,
Just a thought, could you try booting with IOMMU disabled?
Edit /etc/default/grub, and append "intel_iommu=off" to
GRUB_CMDLINE_LINUX_DEFAULT. Then save, and run "sudo update-grub" and
reboot.
Between 21.10 and 22.04 we enabled CONFIG_INTEL_IOMMU_DEFAULT_ON=y, and
it has caused all s
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