Pierre-Luc Drouin wrote:
Nate Lawson wrote:
Pierre-Luc Drouin wrote:
Hajimu UMEMOTO wrote:
On Mon, 14 Nov 2005 12:40:36 -0500
Pierre-Luc Drouin <[EMAIL PROTECTED]> said:
pldrouin> Yep, smart battery is definately the problem. The
performance of my pldrouin> laptop is back to normal when I remove
the xfce4-battery-plugin. pldrouin> acpiconf -i loop reproduces the
problem for me too. So it looks like pldrouin> there is something
wrong in smart battery.
The cmbat has similar issue on some laptops. So, acpi_cmbat.c uses
cache for retrieval to reduce its influence, and its expiration
time is set by hw.acpi.battery.info_expire.
However, acpi_smbat.c doesn't use cache. So, I made a patch. Since I
don't have a laptop which has smbat, I cannot test it by myself.
Please test it and let me know the result.
The patch seams to do its job correctly, but it is still very
annoying to have the whole computer to freeze for 1 second when the
cache expires. What does make the whole system to freeze? Before the
code was changed in 6.0-stable, FreeBSD was able to read the battery
status without freezing my laptop... I have been running 3 OSes
(FreeBSD, Ubuntu and Win XP) on my laptop for a while and never
experienced that kind of problem with either Linux or Win XP. I
guess there is something wrong in the new code added after 6.0-release.
If you have both smbat and cmbat, just disable smbat if you don't
like it. Add this to /boot/loader.conf:
debug.acpi.disabled="smbat"
The pause is related to a buggy or slow EC. Caching the values
happens to hide it. Do you get pauses with smbat disabled (see above
for how to do this)? Can you still get battery status from cmbat?
Ok, there is new development. I realized by playing with
debug.acpi.disabled="smbat", debug.acpi.disabled="smbat cmbat" and
debug.acpi.disabled="cmbat", that my laptop battery is not a smbat,
but a cmbat. When I played with hw.acpi.battery.info_expire after to
have applied the patch for acpi_smbat.c, it was freezing less often
because that sysctl variable was shared by both cmbat and smbat. So I
can only get battery status from cmbat (disabling cmbat disables the
use of acpiconf -i loop). To get the status of my battery via cmbat
was working fine up to 6.0-RELEASE (included), but makes my laptop to
freeze since I upgraded to 6.0-stable with Nov 10th sources. What
change related to cmbat between 6.0-release and 6.0-stable could be
causing this?
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Has someone found how to fix this problem in -stable?
Thank you
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