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 stutter in Video playback and Web browsers when using web applications with the slightest bit of JavaScript functionality, and a Virtualbox virtual machine. I first suspected gnome-shell to be a culprit and had the impressions things where sligthly better when using LXDE as a desktop environment, but still I never got real good performance. it's a real hard to get a grip on problem, as I dont know how to instantly produce the problem and measure it as with normal bugs. The easiest thing I can do is open a web browser, got to youtube, and open a few videos in new tabs and try to play them, and skip back and forth to different points, and "pretty soon" I get a stuttering in the video, a mouse pointer not moving fluently, switching tabs taking multiple seconds that usually works in an instant, a browser process with multiple 100s of % of CPU and a RRD* process. these are things that work without a problem on a very old Lenovo x1 tablet with a mobile processor, and that i would expect to work equally easy on a pretty new X1 extreme with i9 processor and 32G Ram... I did some more testing ( I cannot call it real debugging as I dont know how to use proper tooling and stuff for these kind of analysis) and checked how other Distributions and other Ubuntu versions perform from USB Live systems and found that not only PopOS, but also Ubuntu 21.10, BUT to my surprise also 22.04 from USB Live system behave much better. So I thought i must have some setting wrong, but I didn't know which, until i tried to turn off Intel Boost because I remembered in Ubuntu Studio it is recommended to be turned off for good audio performance. This helps a lot! But, this is not what is different between 22.04 live - because there, Intel boost is ON and it still behaves good. I tried this with several browsers with always the same result, so it seems to be a generic graphics system/library, or kernel problem. It actually "feels" like some scheduling issue - which was the reason I tried the boost setting. I also tried with a new test user, to make sure it's not a userspace local setting, or any browser plugin. But the same problems with a new, "clean" user. The system I experience all this with has been installed first with 20.10, so it has multiple upgrades - it *could* be there is some other setting from previous software versions thats broken - but I have no idea what setting this could be and how I can search for it. It could also be some old version of some gnome, X11 ( I also tried Xorg as well as wayland, no noticeable difference) or graphics library, and the kernel package is the wrong place for this bug, but I dont know where to start with that then... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1973434 Title: massive performance issues since 22.04 upgrade Status in linux package in Ubuntu: Confirmed Bug description: Hi, After upgrading to 22.04 i had to fight with massive performance issues. Browsers appeared to hang every other minute, youtube videos being laggy and hang in between, applications in a virtualbox VM where slow and also hanging every other minute to a level of not being useable. On a pretty recent and powerful system just 2 years old. I noticed CPU jumps in top, but also somehow thought it could be a graphics issue so invested some time installing nvidia drivers properly. Also I wondered if it might be the lowlatency kernel I normally use because I do audio stuff, and switched to generic. But nothing helped. ThenI had the idea it could be a kernel/scheduler issue because the system wasn't always slow, but it appeared certain things kept hanging when other processed had a lot of cpu for a few seconds. So I got a recent mainline kernel, configured it with my last running config from 21.10 before the update, made the debs and installed them, and now can tell that a mainline kernel 5.17.7 with all the dkms modules that i had before which got compiled automatically at installation brings back a "normal" performance. I can browse the web, run multiple youtube vids at once, even in another browser, have thunderbird running, and a virtualbox machine open with another browser for some web app testing and everything runs fine and smooth, no lagging. Not sure yet what the real reason is - either the kernel version, or a patch in the ubuntu version, or the 22.04 kernel config so far, or some configuration made in 21.10 that isn't good with 22.04 and it's kernel anymore. I will go ahead tomorrow and see if I can build a vanilla kernel with the config from the ubuntu 22.04 kernel and "make oldconfig", then I will be able to tell if only the config is making the difference. Please let me know of there is anything I should test to further analyze this issue, or any ideas I can try to solve it without having to run a mainline manually installed kernel. Thanks. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-generic 5.15.0.30.33 ProcVersionSignature: Ubuntu 5.15.0-30.31-generic 5.15.30 Uname: Linux 5.15.0-30-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: henning 6198 F.... pulseaudio /dev/snd/controlC1: henning 6198 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Sat May 14 23:02:38 2022 InstallationDate: Installed on 2020-04-12 (761 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) MachineType: LENOVO 20QV00CEGE ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-30-generic root=/dev/mapper/vgubuntu-root ro RelatedPackageVersions: linux-restricted-modules-5.15.0-30-generic N/A linux-backports-modules-5.15.0-30-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3 SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2022-04-28 (15 days ago) dmi.bios.date: 12/06/2021 dmi.bios.release: 1.42 dmi.bios.vendor: LENOVO dmi.bios.version: N2OET55W (1.42 ) dmi.board.asset.tag: Not Available dmi.board.name: 20QV00CEGE dmi.board.vendor: LENOVO dmi.board.version: SDK0T08861 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.23 dmi.modalias: dmi:bvnLENOVO:bvrN2OET55W(1.42):bd12/06/2021:br1.42:efr1.23:svnLENOVO:pn20QV00CEGE:pvrThinkPadX1Extreme2nd:rvnLENOVO:rn20QV00CEGE:rvrSDK0T08861WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20QV_BU_Think_FM_ThinkPadX1Extreme2nd: dmi.product.family: ThinkPad X1 Extreme 2nd dmi.product.name: 20QV00CEGE dmi.product.sku: LENOVO_MT_20QV_BU_Think_FM_ThinkPad X1 Extreme 2nd dmi.product.version: ThinkPad X1 Extreme 2nd dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973434/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
