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nVidia card overheating.
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alexcortes
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Joined: 18 Dec 2011
Posts: 205
Location: Rio de Janeiro, Brazil

PostPosted: Fri Mar 25, 2016 4:26 pm    Post subject: nVidia card overheating. Reply with quote

Hello fellows! :D

My laptop always had heat issues but from a few months for now the nvidia card (9400m G) is becaming near unusable, with ~84ºC idle (either with X/KDE running or not) when before it was ~72ºC.

My first try was about thermal grease, doesn't help.

Yesterday I made a test running the KaOS live image to find out if the temperature would be the same as my Gentoo installation, and with KaOS the idle temp was about 72ºC.

I do not have idea of what may be raising the GPU temp on my Gentoo installation!

dmesg: http://pastebin.com/8Qx1J1B7

emerge --info: http://pastebin.com/wCaCbPqQ

kernel config: http://pastebin.com/V9ht3BGV

Thanks!!!
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ct85711
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Joined: 27 Sep 2005
Posts: 1707

PostPosted: Fri Mar 25, 2016 5:05 pm    Post subject: Reply with quote

I remember seeing reports of this issue caused by the nvidia drivers before (don't remember when), but just wondering, have you tried downgrading the drivers and see if that helps?
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alexcortes
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Joined: 18 Dec 2011
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Location: Rio de Janeiro, Brazil

PostPosted: Fri Mar 25, 2016 5:31 pm    Post subject: Reply with quote

Oh thanks!

I began to emerge old version really now. :D

Thanks!

EDIT: to make the things ever worse, the heatsink is shared between the CPU and the GPU. Any rise on CPU temp also rise the GPU too. :x
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alexcortes
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Joined: 18 Dec 2011
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Location: Rio de Janeiro, Brazil

PostPosted: Fri Mar 25, 2016 7:58 pm    Post subject: Reply with quote

Downgrading didn't help. I haven't tried the 340.93-r1 because I would need to downgrade X and kernel too.

I have another laptop sitting here (AMD A6) I think I will install Gentoo there and put this one to retirement.

For now I will underclock the nvidia card.

Thanks!
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paulj
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Joined: 30 Sep 2004
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Location: Wales, UK

PostPosted: Mon Mar 28, 2016 10:11 am    Post subject: Reply with quote

A couple of thoughts:

  • Is the air passage to and from the heatsink clear?
  • Is the CPU busy all the time? I suggest you emerge and run htop (sys-process/htop) from a terminal (with and without X, and see what is running and how much CPU capacity is being used).
  • Does KaOS use the same settings for hardware acceleration?
  • You could give nouveau a try: https://wiki.gentoo.org/wiki/Nouveau_%26_nvidia-drivers_switching
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alexcortes
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Joined: 18 Dec 2011
Posts: 205
Location: Rio de Janeiro, Brazil

PostPosted: Mon Mar 28, 2016 4:09 pm    Post subject: Reply with quote

@paulj

Everything is ok about air cooling, new thermal grease too and I am with air conditioning on near 24/7 too.

The CPU is idle I already had a look.

Trying more with KaOS anything I did make the temperature os the GPU up to high levels very fast - CPU is very ok, just the idle was better os KaOS.

With nouveau the things was even worse, I couldn't finish the boot due to overheating, thats why I got the KaOS to have how to install the nvidia driver back.

Anyway, I am already installing on the other laptop. :D

Thanks!
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