Description of problem: Pointer in Xfce starts to stutter randomly making it hard to move around. Problem also occurs in other desktop environments when using Fedora. Version-Release number of selected component (if applicable): Fedora 15 How reproducible: Start Xfce / other desktop environment and after a few minutes problem starts. Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: I have noticed the following when running top: root: kworker/0:2 kworker/1:2 CPU usage can go up to 70% when not doing anything else other than move around the screen.
The problem is faced by many laptop users. Unfortunately there appears to be little documentation ref kworker. Some users have said the following helps: echo N> /sys/module/drm_kms_helper/parameters/poll but I do not what why... Can anyone advise why this is an issue and when a fix will be available? Thanks
I have tested Fedora 16 too and the same problem is occurring with the GNOME (x86_64). It would appear to be an issue with kernels since Fedora 15. I have also tested Debian 6 and can confirm there is not problem with 2.6.32 (x86_64).
drm_kms_helper.poll=0 in grub / boot may help.
What kernel version are you using?
Hi Chuck, Thanks for your response. In terms of kernel it makes no difference if I use the version supplied with the Fedora 15 / 16 release or the latest the stuttering still occurs. In addition because CPU uses increases so much battery life drops considerably and is almost half what I would get if using a Windows OS. Unfortunately the problem makes using Linux distros unbearable and since I have not been able to 100% resolve this I have removed Linux. I am willing to do tests using Fedora 16 (life usb) if this will help. Thanks
Do you still see this with an F17 live image?
Hi Josh, I will be doing a test with Fedora 17 x86_64 Live image on a USB stick and provide feedback soon.
Unfortunately there is still stutter although it does seem a little better than previous releases of Fedora. Battery life again does show a drop when the stuttering is occuring. Bear in mind I only had Firefox and the GNOME 3 file manager when this started hapening.
Fedora 15 has reached it's end of life as of June 26, 2012. As a result, we will not be fixing any remaining bugs found in Fedora 15. In the event that you have upgraded to a newer release and the bug you reported is still present, please reopen the bug and set the version field to the newest release you have encountered the issue with. Before doing so, please ensure you are testing the latest kernel update in that release and attach any new and relevant information you may have gathered. Thank you for taking the time to file a report. We hope newer versions of Fedora suit your needs.
The problem continues with Fedora 17 and 18 beta. Is their ever going to be a fix?
Until now it always helped when i executed (kernels before 3.8) echo N> /sys/module/drm_kms_helper/parameters/poll Recently I've upgraded to kernel 3.8.1 on my Lenovo T400 and system became VERY laggy even after disabling polling. The quickiest way how to trigger mouse stuttering is to switch to gnome-shell overview and start scrolling among application icons. TOP output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6846 root 20 0 0 0 0 R 28.6 0.0 0:18.93 kworker/u:3 7564 root 20 0 0 0 0 S 3.6 0.0 0:01.93 kworker/0:1 1663 cqs 20 0 1980m 309m 32m S 3.3 8.0 7:28.30 gnome-shell 6789 root 20 0 0 0 0 S 3.3 0.0 0:07.27 kworker/1:0 5907 cqs 20 0 715m 23m 12m S 1.3 0.6 0:05.03 gnome-terminal POWERTOP output: 368.4 wakeups/second, 12.3 GPU ops/second, 0.0 VFS ops/sec, 40.3 GFX wakes/sec and 67.7% CPU use Usage Events/s Category Description 1893 rpm Device Laptop fan 52.2% 8.4 kWork i915_hotplug_work_func 0.3% 82.1 Interrupt [46] i915 0.2% 78.7 Interrupt PS/2 Touchpad / Keyboard / Mouse 5.5% 40.8 Process /usr/bin/gnome-shell 0.5% 46.7 Timer tick_sched_timer 0.1% 32.7 kWork od_dbs_timer 0.4% 21.9 Process gnome-terminal 0.1% 15.3 Interrupt [7] sched(softirq) 0.7% 12.2 Process /usr/bin/Xorg :0 -background none -verbose -auth /var/run/gdm/auth-for-gdm-BSmIYl/database -seat seat0 -nolisten tcp vt1 2.4% 2.5 Process [kworker/u:3] POWERTOP - software power consumers Usage Wakeups/s GPU ops/s Disk IO/s GFX Wakeups/s Category Description 521.6 ms/s 4.2 4.1 kWork i915_hotplug_work_func 3.2 ms/s 81.8 0.2 Interrupt [46] i915 1.7 ms/s 78.7 Interrupt PS/2 Touchpad / Keyboard / Mouse 55.4 ms/s 35.7 5.1 20.8 Process /usr/bin/gnome-shell 5.3 ms/s 46.7 Timer tick_sched_timer
I'm going to try Fedora 19 but I wont hold my breath as there seems little response from Fedora / RH. masaj, thanks for adding your update.
(In reply to my_linux from comment #12) > I'm going to try Fedora 19 but I wont hold my breath as there seems little > response from Fedora / RH. > > masaj, thanks for adding your update. Hi my_linux, I'm afraid nobody is going to fix this, so either you throw your laptop out of window or stay with 3.7.9 I've been testing many kernels since my last comment and all with the same result, unusable.
BTW, the same slowness is spotted also on other distros like newest Ubuntu, etc.. with kernel higher than 3.8
Yep it's been going on for far too long, however, I find it hard to believe it's only this laptop that is showing this issue. Throwing the laptop out the windows is out of the question ;-). I've installed Windows 7 on a SSD and it's extremely quick so no Linux distro unless a VM.
I think good news are arriving here! "A big pain relief, at least on affected systems, is Ebgert Eich's hotplug irq storm mitigation work. With the modeset locking rework from 3.9 this should get rid of the last reason to boot with the drm_kms_helper.poll=0 option. Finally no longer a sluggish cursor and delayed screen updates!" http://blog.ffwll.ch/2013/04/neat-drmi915-stuff-for-310.html
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 18 kernel bugs. Fedora 18 has now been rebased to 3.11.4-101.fc18. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 19, and are still experiencing this issue, please change the version to Fedora 19. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. It has been over a month since we asked you to test the 3.11 kernel updates and let us know if your issue has been resolved or is still a problem. When this happened, the bug was set to needinfo. Because the needinfo is still set, we assume either this is no longer a problem, or you cannot provide additional information to help us resolve the issue. As a result we are closing with insufficient data. If this is still a problem, we apologize, feel free to reopen the bug and provide more information so that we can work towards a resolution If you experience different issues, please open a new bug report for those.
Hello, just fyi, this problem disappeared with kernel 3.12. Thanks!
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days