[ltp] ThinkPad T520 fan: less rpm recently
Martin Steigerwald
linux-thinkpad@linux-thinkpad.org
Fri, 2 Sep 2011 21:55:03 +0200
Hi!
One of the few things that annoyed with the T520 was the fan noise when=20
using it with Linux. I got about 2640 rpm, sometimes even 2800 rpm.
Well I don=B4t know what changed, but it got better and it was not:
/etc/default/grub:
# The Leading Cause Of The Recent Linux Kernel Power Problems
# http://www.phoronix.com/scan.php?page=3Darticle&item=3Dlinux_2638_aspm&nu=
m=3D2
GRUB_CMDLINE_LINUX_DEFAULT=3D"pcie_aspm=3Dforce"
I am currently using:
merkaba:~> apt-show-versions | egrep "(linux-image|libgl1-mesa-dri|libdrm|
xserver-xorg/|xserver-xorg-core|xserver-xorg-video-intel)"
libdrm-intel1/sid uptodate 2.4.26-1
libdrm-radeon1/sid uptodate 2.4.26-1
libdrm2/sid uptodate 2.4.26-1
libgl1-mesa-dri/sid uptodate 7.11-5
libgl1-mesa-dri-dbg/sid uptodate 7.11-5
linux-image-2.6-amd64/sid uptodate 3.0.0+39
linux-image-3.0.0-1-amd64/sid uptodate 3.0.0-3
linux-image-amd64/sid uptodate 3.0.0+39
xserver-xorg/sid uptodate 1:7.6+8
xserver-xorg-core/sid uptodate 2:1.11.0-1
xserver-xorg-video-intel/sid uptodate 2:2.16.0-1
Recently updated was linux kernel debian package 3.0.0-1/2 to 3.0.0-3=20
which is stable 3.0.3. libgl1-mesa-dri 7.11 with which graphics corruption=
=20
with a playstation game emulated via pcsx (pcxs reloaded actually) have=20
gone and x.org intel video driver 2.16.
Its a whopping 600-800 rpm lower now. Did you experience something similar=
=20
recently? Its almost perfect now. Almost unhearable.
PowerTOP 1.97 Overview Idle stats Frequency stats Device stats =
=20
Tunables =20
Summary: 528,9 wakeups/second, 0,0 GPU ops/second and 0,0 VFS ops/sec
Usage Events/s Category Description
1972 rpm Device Laptop fan
2,4 ms/s 197,6 Interrupt PS/2 Touchpad /=20
Keyboard / Mouse
100,0% Device Audio codec hwC0D0:=
=20
Conexant
8,3 ms/s 100,3 Process kwin -session [...]
0,8 ms/s 66,8 Interrupt [47]=20
i915@pci:0000:00:02.0
538,9 =B5s/s 56,0 Timer hrtimer_wakeup
7,4 ms/s 52,1 Process /usr/bin/X :0 vt7 -
br -nolisten tcp -auth /var/run/xauth/A:0-koQdJa
551,4 =B5s/s 43,3 Timer tick_sched_timer
9,2 ms/s 0,0 Process powertop
Summary: 505,8 wakeups/second, 0,0 GPU ops/second and 0,0 VFS ops/sec
Usage Events/s Category Description
1971 rpm Device Laptop fan
59,4 ms/s 162,3 Process /usr/bin/X :0 vt7 -
br -nolisten tcp -auth /var/run/xauth/A:0-koQdJa
100,0% Device Audio codec hwC0D0:=
=20
Conexant
18,9 ms/s 84,6 Process kwin -session [...]
9,3 ms/s 84,6 Process /usr/bin/konsole -
session [...]
593,9 =B5s/s 46,6 Timer hrtimer_wakeup
4,3 ms/s 37,7 Interrupt [16] ehci_hcd:usb1
1,3 ms/s 31,1 Interrupt [47]=20
i915@pci:0000:00:02.0
17,1 ms/s 16,7 Process /usr/bin/plasma-
desktop
1,2 ms/s 14,0 Timer tick_sched_timer
30,0 ms/s 0,2 Process /usr/bin/korgac --
icon korgac
242,9 =B5s/s 5,2 Interrupt [7] sched(softirq)
218,6 =B5s/s 2,9 Interrupt [4] block(softirq)
1,7 ms/s 1,5 Process /usr/bin/kontact -
session [...]
139,5 =B5s/s 1,3 kWork cache_reap
PowerTOP 1.97 Overview Idle stats Frequency stats Device stats =
=20
Tunables =20
Summary: 547,4 wakeups/second, 0,0 GPU ops/second and 0,0 VFS ops/sec
Usage Events/s Category Description
1972 rpm Device Laptop fan
54,3 ms/s 158,7 Process /usr/bin/X :0 vt7 -
br -nolisten tcp -auth /var/run/xauth/A:0-koQdJa
33,3 ms/s 137,7 Process kwin -session [...]
100,0% Device Audio codec hwC0D0:=
=20
Conexant
31,2 ms/s 52,2 Process /usr/bin/plasma-
desktop
629,0 =B5s/s 61,4 Timer hrtimer_wakeup
1,2 ms/s 37,2 Interrupt [47]=20
i915@pci:0000:00:02.0
30,4 ms/s 15,9 Process /usr/bin/kmail -
session [...]
2,7 ms/s 13,4 Process /usr/bin/konsole -
session [...]
0,7 ms/s 12,7 Timer tick_sched_timer
1,1 ms/s 12,1 Interrupt [16] ehci_hcd:usb1
367,7 =B5s/s 5,1 Process /usr/sbin/acpid
Ciao,
=2D-=20
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7