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After updating to linux-3.7.4-1, xorg-server-1.13.2-1, xorg-server-common-1.13.2-1 and nvidia-313.18-1 i've noticeable lag whenever i hover the mouse cursor on something that changes the cursor shape and it's 100% reproducible: load a web page with lot of links (such as this subreddit and move the cursor vertically across the links, the mouse will start moving skipping lot of pixels instead of smooth movement, CPU usage also increase. No matter what browser you use, even Firefox will make this happen. Anyone experiencing the same?
Also, move across window borders to reproduce it, but it will be less noticeable since the mouse cursor will not change as much faster, or move it on a block of text to make it change and you'll notice the behavior.
Name : xorg-server
Version : 1.13.2-1
Name : xorg-server-common
Version : 1.13.2-1
Name : nvidia
Version : 313.18-1
Name : linux
Version : 3.7.4-1
Last edited by bmanuel (2013-01-27 14:40:38)
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Noticed /usr/bin/Xorg spikes to 80%-100% when the mouse change cursor type
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I had a similar issue months ago, which I think was caused by the CONFIG_COMPACTION kernel option - try turning that off.
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I had a similar issue months ago, which I think was caused by the CONFIG_COMPACTION kernel option - try turning that off.
Thank you for the tip, however i cannot find much information about this flag: does this imply to recompile the kernel (and maintain it updated with new releases)?
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Yes, you would need to recompile the kernel, there is no boot parameter to disable compaction, sadly.
Another related thing that's easy to try now:
echo 0 > /sys/kernel/mm/ksm/run
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$ cat /sys/kernel/mm/ksm/run
0
It looks like KSM is already disabled on my system, but how does this relate to Xorg cursor glyph switching? And how did you discover that in your case this specific option did make a difference? o_O
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I discovered by trial-and-error, and lots of googling, and pondering the various ways that things can slow down either by design or by being buggy
If you're going to recompile the kernel, I would suggest trying 1000hz for a desktop instead of 300 also, but bear in mind that it may cause instability (I strongly suspect that 1000hz causes freezes on my laptop, but e.g. 432hz and 600hz are OK).
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I tried recompiling and using it but it looks like i also need to recompile every module and driver i'm using (nvidia/virtualbox/..), and that looks a bit of a daunting task to maintain to just solve this stupid problem ;-#
Anyway, i discovered that also *ANY* animated cursor will make the jump behave crazily, missing DPIs look like a mouse from the early 70.. or windows without ps2rate
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hi,
I have the similar problem(laptop). The touchpad is unusable now, but a usb mouse is ok. I did google this, and found some solutions concerning xorg.conf setting. but that does not work for me.
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Ok, so, putting this:
Option "HWCursor" "false"
make it so the jumping cursor problem goes away, but there is a new one: the cursor in always invisible when not moving..
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Oh well, completely solved by installing latest stable nvidia driver (11/december/2012).
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Don't turn it into a crossword puzzle, simply state the version number. You mean downgrading from 313.18 to 304.64, or 310.32, or what?
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Oh well, completely solved by installing latest stable nvidia driver (11/december/2012).
I dont think this will work for me, because I only need intel-driver
Last edited by yjcong (2013-01-27 14:40:49)
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Downgraded to these;
Name : nvidia
Version : 310.19-3
Name : nvidia-utils
Version : 310.19-1
Didn't intend to make it difficult, but i had to search for these packages around the net by date since there are no old packages in the repos.
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I have similar laggy mouse issues with the 313.18 nvidia drivers. Disabling "Sync to VBlank" in nvidia-settings helped here.
Not sure why it matters, maybe because kwin runs with effects/composite enabled.
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