[ltp] Re: [ANN] tp_smapi - a new Linux SMAPI driver

Kai-Thorsten Hambrecht linux-thinkpad@linux-thinkpad.org
Sat, 10 Dec 2005 22:00:37 +0100


Hi,

>>just verified that to set a stop threshold under windows works on my
>>T42p. So this model should support this settings.

> So under Windows your T42p provides separate start and stop

yes.

> thresholds? That means it's either using a different interface, or
> implementing the stop threshold in software using inhibit_charge.

don't know. any idea how to figure this out?

>>I also tried setting CD speed, this works without an error, but does not
>>make any difference.

> Sound may be hard to distinguish, so try measuring bandwidth (e.g.,
> "pv /dev/cdrom > /dev/null") for each speed. (Remember to stop the


root@lt-kh:~ > echo 0 > /sys/devices/platform/smapi/cdrom_speed
root@lt-kh:~ > pv /dev/cdrom > /dev/null
 302MB 0:05:40 [ 909kB/s]
[==================================================================>]
100% ETA 0:00:00
root@lt-kh:~ > echo 1 > /sys/devices/platform/smapi/cdrom_speed
root@lt-kh:~ > pv /dev/cdrom > /dev/null
 302MB 0:02:25 [2.07MB/s]
[==================================================================>]
100% ETA 0:00:00
root@lt-kh:~ > echo 2 > /sys/devices/platform/smapi/cdrom_speed
root@lt-kh:~ > pv /dev/cdrom > /dev/null
 302MB 0:02:24 [2.09MB/s]
[==================================================================>]
100% ETA 0:00:00


ok. there is a difference between "slow" and "medium" but not between
"medium" and "fast"

Kai.