Graphics lagging on x200?

name at domain writes:

> Hi there!
>
> New to trisquel and, needless to say, loving it so far.
>
> I was beyond excited to find out that I could use my 21:9 monitor with
> a librebooted x200 and ultrabase dock i got off ebay at 2560 x 1080
> (not 3440 x 1440 but good enough).
>
> Everything works fine when I power on but the the graphics start to
> lag after a while.
> Graphics start to look like bad stop motion.
> I thought it may be gpu thermal throttling but I'm not even sure how
> to check :/
> However, when I turn it on and off (no time to cool down) it works
> fine again...for a while, sometimes 20 minutes, sometimes a couple
> hours.
>
> Any thoughts?
>

I'm running the same machine, driving an older 1920:1080 monitor. I've
had thermal issues, but those didn't result in throttling. Instead, the
system would shut itself down (usually while playing a lot of video).

I fixed it by opening up the machine, cleaning it, and re-applying the
thermal paste.

I would recommend sensors from the lm-sensors package to get information
like this:

acpitz-virtual-0
Adapter: Virtual device
temp1: +46.0°C (crit = +127.0°C)
temp2: +47.0°C (crit = +99.0°C)

thinkpad-isa-0000
Adapter: ISA adapter
fan1: 2388 RPM
temp1: +46.0°C
temp2: +47.0°C
temp3: N/A
temp4: +46.0°C
temp5: +28.0°C
temp6: N/A
temp7: +36.0°C
temp8: N/A
temp9: +51.0°C
temp10: +44.0°C
temp11: N/A
temp12: N/A
temp13: N/A
temp14: N/A
temp15: N/A
temp16: N/A

coretemp-isa-0000
Adapter: ISA adapter
Core 0: +42.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +40.0°C (high = +105.0°C, crit = +105.0°C)

...and perhaps also looking at how CPU scaling is set with

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

--
"Cut your own wood and it will warm you twice"