Am Freitag 27 Juli 2007 18:41 schrieb Henrique de Moraes Holschuh:
> This patch is against which version of thinkpad-acpi? The one in 2.6.21?
>
> Also, next time please use diff -up to create the patch.
Was against 2.6.22, but forget the patch. I tried changing the volume using
/proc/acpi/ibm/volume while playing music, and nothing happens. So my patch
only discarded the errors and don't helps against the real problem.
> > --- 2743,2750 ----
> > cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP :
> > TP_CMOS_BRIGHTNESS_DOWN; inc = value > current_value ? 1 : -1;
> > for (i = current_value; i != value; i += inc) {
> > ! if (issue_thinkpad_cmos_command(cmos_cmd) &&
> > ! !acpi_ec_write(brightness_offset, i + inc))
> > return -EIO;
> > }
>
> This doesn't make sense. issue_thinkpad_cmos_command returns 0 (false) if
> it works. The way you made it, it seems to imply that the X20 needs *only*
> the CMOS commands, and that it doesn't want the EC writes.
Ok , I see my mistake, but it works. Don't know why. Next thing I dont
understand: there is no /proc/acpi/ibm/cmos file? But cmos commands require
this (or not?)
> What happens if you use the ecdump facility to control the volume like
> this: (thinkpad-acpi loaded with experimental=1):
>
> echo 0x30 0x01 > /proc/acpi/ibm/ecdump (set volume to 1, mute off)
> echo 0x30 0x07 > /proc/acpi/ibm/ecdump (set volume to 7, mute off)
> echo 0x30 0x45 > /proc/acpi/ibm/ecdump (set volume to 5, mute ON)
> ...
> etc?
>
> Does it work? Does it error out with an -EIO ?
Doing this, there is no error, but also nothing happens. I can read the value
afterwards from /proc/acpi/ibm/volume, but it doesn't reflects the
real value (e.g. it says mute, but i can hear sounds from the speaker)
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