[ltp] X300 getting stuck on lowest frequency
Alexandre Kalmeijer
linux-thinkpad@linux-thinkpad.org
Fri, 21 Nov 2014 17:54:27 +0100
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I had this issue when I ran my X220 only on AC,
the thing is that when no battery is present the bios will lock frequency.
If this is not the case for then I would suggest downloading tlp and trying
to set freq manually. gl
On Sat, Nov 15, 2014 at 10:13 AM, Mark Rosenstand <rosenstand@gmail.com>
wrote:
> Hello list,
>
> My favorite ThinkPad is getting stuck on 800 MHz every couple of days,
> requiring a reboot to reset.
> I don't believe it's a new issue, but with applications getting heavier
> and heavier, it is now barely
> usable when running at that frequency. (Thank you, GNOME 3.)
>
> In the BIOS the scaling modes are set to automatic for both AC and
> battery. I've tried to set
> it to "Maximum performance" for AC, but it doesn't seem to make a
> difference. Disabling
> SpeedStep altogether seems to be the only option to avoid the problem, but
> that of course
> affects the temperature, which makes my already-aggressively-configured
> thinkfan(1) jump from
> level 1 to 2 -- which on this model means ~5200 RPM instead of ~2000 RPM.
>
> The OS (Debian testing) uses the ondemand governor. When the machine is
> stuck,
> /sys/bus/cpu/devices/cpu{0,1}/cpufreq/scaling_max_freq shows 800000, so
> I'm pretty sure this
> is a BIOS/firmware issue. The BIOS installed is the latest available
> (1.10).
>
> The laptop is primarily used on AC. I open and close the lid (suspend) a
> couple of times a day.
> Occasionally, I unplug it from AC and use it on battery. I have no idea
> which of the two triggers
> this behaviour from the BIOS, but the machine is having the issue as I
> type this, and IIRC it
> hasn't been unplugged from AC since last boot.
>
> I also have a T410s and a X220, none of which seem to behave this way, but
> as the X300 is still
> my preferred Thinkpad, I don't use them that much.
>
> Has anyone else tried or heard of this? Ideas?
>
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<div dir=3D"ltr">I had this issue when I ran my X220 only on AC,<div>the th=
ing is that when no battery is present the bios will lock frequency.=C2=A0<=
/div><div><br></div><div>If this is not the case for then I would suggest d=
ownloading tlp and trying to set freq manually. gl</div></div><div class=3D=
"gmail_extra"><br><div class=3D"gmail_quote">On Sat, Nov 15, 2014 at 10:13 =
AM, Mark Rosenstand <span dir=3D"ltr"><<a href=3D"mailto:rosenstand@gmai=
l.com" target=3D"_blank">rosenstand@gmail.com</a>></span> wrote:<br><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #c=
cc solid;padding-left:1ex"><div dir=3D"ltr">Hello list,<div><br></div><div>=
My favorite ThinkPad is getting stuck on 800 MHz every couple of days, requ=
iring a reboot to reset.</div><div>I don't believe it's a new issue=
, but with applications getting heavier and heavier, it is now barely</div>=
<div>usable when running at that frequency. (Thank you, GNOME 3.)</div><div=
><br></div><div>In the BIOS the scaling modes are set to automatic for both=
AC and battery. I've tried to set</div><div>it to "Maximum perfor=
mance" for AC, but it doesn't seem to make a difference. Disabling=
</div><div>SpeedStep altogether seems to be the only option to avoid the pr=
oblem, but that of course</div><div>affects the temperature, which makes my=
already-aggressively-configured thinkfan(1) jump from</div><div>level 1 to=
2 -- which on this model means ~5200 RPM instead of ~2000 RPM.</div><div><=
br></div><div>The OS (Debian testing) uses the ondemand governor. When the =
machine is stuck,</div><div>/sys/bus/cpu/devices/cpu{0,1}/cpufreq/scaling_m=
ax_freq shows 800000, so I'm pretty sure this</div><div>is a BIOS/firmw=
are issue. The BIOS installed is the latest available (1.10).</div><div><br=
></div><div>The laptop is primarily used on AC. I open and close the lid (s=
uspend) a couple of times a day.</div><div>Occasionally, I unplug it from A=
C and use it on battery. I have no idea which of the two triggers</div><div=
>this behaviour from the BIOS, but the machine is having the issue as I typ=
e this, and IIRC it</div><div>hasn't been unplugged from AC since last =
boot.</div><div><br></div><div>I also have a T410s and a X220, none of whic=
h seem to behave this way, but as the X300 is still</div><div>my preferred =
Thinkpad, I don't use them that much.</div><div><br></div><div>Has anyo=
ne else tried or heard of this? Ideas?</div></div>
</blockquote></div><br></div>
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