I would think it a good idea if setting the pstate to performance
would disable powerclamp.
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https://bugs.launchpad.net/bugs/1389077
Title:
[HP ProBook 4530s] Intel
Hi,
I tried 3.18-rc4 and 3.17.1 and they both have this problem.
** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-3.18-rc4
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Yes, you have a point there about injecting idle time to the CPU to cool down
the GPU. The thing is that modern GPU's (and CPU's) already have thermal
protection so I don't need intel_powerclamp to protect anything. Now, if I was
interested in keeping the power usage down then powerclamp would
Hi Christopher,
I updated the BIOS to F.18 but it doesn't change anything. Suspend/resume still
behaves as stated above. I also tried with the Nouveau driver but the result is
similar; on resume you get the graphical login screen (at least) but it does
not accept any input (keyboard or mouse)
I should probably add that suspend/resume worked just fine in 13.10 with
this laptop.
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https://bugs.launchpad.net/bugs/1391744
Title:
[HP 14 Notebook PC] Can't resume from
Model number: 14-d004TX
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Title:
[HP 14 Notebook PC] Can't resume from suspend state
Status in “linux” package in Ubuntu:
Public bug reported:
Ubuntu version: 14.10
Video: Intel HD 4000+Nvidia GeForce 820M
Expected: Laptop can successfully suspend and resume.
What actually happen: Laptop can suspend but upon resume all that is
seen is a black screen with an underline cursor in the top left corner.
It is possible
Hi William,
How is your GPU temperature when this happens? Btw, as a more permanent
temporary fix than rmmod you can blacklist it by creating the file
/etc/modprobe.d/blacklist-intel_powerclamp.conf and adding the line blacklist
intel_powerclamp to it.
As for my problem, I think it's a bit
I have noticed the same thing. If I start playing a game in wine, say
ETS2, on my laptop (Intel HD 4000+Nvidia 820M) it runs fine for maybe a
minute and after that the FPS drops like a rock. The problem, if you
can call it that, is that the GPU temperature goes above 85C and thus
powerclamp kicks
Addition: the CPU temperature never goes above 80C when this happens and
I don't think the GPU temperature is a problem, I think the driver or
GPU itself will slow down if it gets too hot (but I could be wrong).
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So after some more tests I got some interesting results. The problem seems to
be that the NVidia card runs much hotter in Linux than in Windows. Playing
The Talos Principle on Steam in Ubuntu the GPU temperature reaches 95-97C
while in Windows 8 it hovers around 75-80C. Pretty much the same
Public bug reported:
I have a HP Notebook 14 and the Alps touchpad on it is not detected. The
Touchpad tab in the Mouse preferences is absent.
WIndows 8 reports it as Alps Touch Pad 8.201.1711.126.
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-17-generic 3.11.0-17.31
I realized I might have been a bit terse in the description. The
touchpad is detected as a PS/2 mouse and works that way. There's no
tapping or 3-rd button emulation or anything like that though.
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With the kernel from package linux-image-3.14.0-031400rc4-generic the
touchpad is detected, see attached output. I am not able to test it in X
though since I get no video with that kernel (probavly because of the
Nvidia Optimum thing).
** Attachment added: devices-3.14
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