Ubuntu drivers eating a lot of CPU. Not always but at least 50% of the times
I have actually a very slow PC because of this:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1541 root 20 0 2343424 51804 2624 S 111.9 1.4 198:49.14 DisplayLinkMana
in other words, DisplayLinkMana(ger) eats a lot of CPU. from 50 to more than 100%
sometimes not.
I think this is an issue, that should be fixed.
Thank you.
alfonso
Alfonso Mantero
shared this idea
80 comments
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Björn Seebeck
commented
Just got a new laptop (Thinkpad) with dock and now cpu fan goes crazy under Linux mint....
DisplayLinkMana permanently consumes CPU with 50%...Really annoying
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Matthew Kernes
commented
I see this still isn't a priority to DisplayLink.
Anyone know of any good alternatives to DisplayLink?
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Thiago Monteiro
commented
What suffering!
The system as a whole goes slow. -
Jon Levy
commented
@DisplayLinkDevelopers, any update on this?
Our teams that solely consists of Ubuntu users is dropping all DisplayLink products entirely and we are seeking new vendors unless we atleast get an input from the driver lead responsible for this mess.
Its not much to ask.
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Martin Bartlett
commented
Mint 20 with Cinnamon on Dell Precision 5530, 6 Xeon cores and Nvidea graphics. Using Dell D6000 dock, one HDMI 28inch 4K-capable display attached (though only using 2560x1440).
The driver is using up to 80% CPU at times. The desktop is visibly slower and choppy.
The visible behaviour (though not the CPU consumption) is better with the proprietary Nvidea driver than Nouveau, but still annoyingly suboptimal.
Interestingly the display works without the DisplayLink driver with no CPU issues - using the legacy kernel one? I don't know.
Quite apart from all that, though, the setup is unusable because when the screen 'goes to sleep' an attempted awakening causes the elsewhere-reported X crash loop, Reboots do the same. It requires a very tiresome specific sequence of actions to make it all work again.
The intention was to add a second screen using DisplayPort, but this does not look viable with this setup.
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Simone Desantis
commented
Display Link Device: i-tec USB3.0 Docking station (2 full hd monitors connected)
CPU: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
32gb ram
Used Nvidia proprietary binary drivers + display Link drivers + updated XServer from displaylink
Kubuntu 20.04Here my top: 12 core all full.
https://pasteboard.co/JvjRbcW.pngOpen applications: kate, chrome (5 static tabs no video only forums)
The situation seems getting worse. I'm going to leave this setup and this technology too due to complete lack of driver improvement.
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Anonymous
commented
Fresh instalation of Ubuntu 20.04 LTS on Dell Vostro 5590 with
Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
with integrated Intel UHD Graphics and dedicated NVidia GP108M [GeForce MX250]Used Nvidia proprietary binary drivers + display Link drivers + updated XServer from displaylink
https://www.displaylink.org/forum/showthread.php?t=67148
Still uses lot of CPU - gnome shell is visually slower than when only on internal display.
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Jason Williams
commented
Yep, regularly over 50% cpu. What a piece of shit.
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Clyde
commented
same issue, maybe hire a developer? 100% CPU
===================================================================================
top - 20:02:55 up 8:21, 1 user, load average: 1.61, 1.89, 1.90
Tasks: 273 total, 1 running, 222 sleeping, 0 stopped, 0 zombie
%Cpu(s): 18.9 us, 8.9 sy, 0.0 ni, 71.9 id, 0.3 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem : 15792668 total, 10424560 free, 1975056 used, 3393052 buff/cache
KiB Swap: 2097148 total, 2097148 free, 0 used. 12789448 avail MemPID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5858 root 20 0 2653564 110236 10856 S 100.3 0.7 6:57.19 DisplayLinkMana -
Bernd Martens
commented
same problem here.. also Ubuntu 20.04.
I also have other products similar to displaylink, these work nicely.
When I sort processes by cpu usage, DisplayLinkManager is always on top.
Maybe not that extreme, it is just around 5% of cpu. But anyways, can this be optimized somehow? -
Anonymous
commented
Same here with Acer and Ubuntu 20.04
Probably have to buy another product.... -
Anonymous
commented
Same issue in dell gaming i7700HQ with, CPU UP to 100%
Really is a mess this behavior -
Rafael
commented
You guys from display link are never fixing this situation on Ubuntu? How come that consuming a powerful XPS 13?
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Anonymous
commented
DisplayLinkManager frequently uses over 70% of my cpu! This is really disappointing.
Ubuntu 18.04.3 LTS on a Dell XPS 13 -
Sven Recker
commented
Same Problem as the other since 3 days
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Frenk
commented
.-/+oossssoo+/-. frank@xxxxxxx
`:+ssssssssssssssssss+:` --------------
-+ssssssssssssssssssyyssss+- OS: Ubuntu 19.10 x86_64
.ossssssssssssssssssdMMMNysssso. Host: Latitude 5490
/ssssssssssshdmmNNmmyNMMMMhssssss/ Kernel: 5.3.0-46-generic
+ssssssssshmydMMMMMMMNddddyssssssss+ Uptime: 23 hours, 28 mins
/sssssssshNMMMyhhyyyyhmNMMMNhssssssss/ Packages: 2925 (dpkg), 14 (snap)
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Shell: bash 5.0.3
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ Resolution: 1368x768, 2560x1440, 1920x1080
ossyNMMMNyMMhsssssssssssssshmmmhssssssso DE: GNOME 3.34.3
ossyNMMMNyMMhsssssssssssssshmmmhssssssso WM: GNOME Shell
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ WM Theme: Adwaita
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Theme: Yaru-dark [GTK2/3]
/sssssssshNMMMyhhyyyyhdNMMMNhssssssss/ Icons: gnome [GTK2/3]
+sssssssssdmydMMMMMMMMddddyssssssss+ Terminal: gnome-terminal
/ssssssssssshdmNNNNmyNMMMMhssssss/ CPU: Intel i5-8350U (8) @ 3.600GHz
.ossssssssssssssssssdMMMNysssso. GPU: Intel UHD Graphics 620
-+sssssssssssssssssyyyssss+- Memory: 2890MiB / 15871MiB4818552 95208 4888 S 94,8 0,6 53:33.45 DisplayLinkMana
if i do nothing its about 30% cpu, begin to move the mouse only it jumps to 200%
please fix the bug soon
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Malte
commented
Same issue here,
fresh install Ubuntu 19.10, Dell D6000 Dock with Dell E7450
Based on the reports below, the issue seem frequent, as has been around since 2017!
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Balthasar
commented
Given the age of this issue, the lack of response from DisplayLink is extremely poor.
For completeness: Issue persists on Ubuntu 18.04, Kernel 5.3.0-42, Intel Core i5-8250U (Kaby Lake R) with Lenovo 40AF0135UK USB-C dock. -
James
commented
Just to add to my comment from last July for anyone else still struggling with the Linux driver (why have DisplayLink not made ANY comment on this issue?!)
I found that just using the DisplayLink dock for mouse, keyboard and power and plugging the monitors directly into the laptop reduced CPU usage back down to less that 1% instead of the consistent 100-200%, so the issue appears to be solely with the way the driver is handling the displays. It does of course make the dock almost completely useless, but at least my laptop is not overheating and freezing every few minutes.
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Paweł
commented
The same issue. Lenovo Thinkpad T490, USB-C + USB+A Hybrid Docking Station (40AF0135EU), Ubuntu 19.10 with the latest (5.2) DP driver.
High CPU usage despite the activity, the system sometimes hangs during boot or when coming back from suspend.
