#8 Takes a very long time to boot and read battery state

[Vicky Shrestha]

I am using ACER TravelMate 4000LCi Laptop. I downloaded
the latest version (sbs-cm-20050328.tar.bz2) and
installed it as instructed in the REAMDE file. It now
shows my battery and ac_adapter

The installation went fine, however I am experiencing
following Problems.

1. It takes around 5 mins to boot the laptop. The
screen goes blank as soon as it load the kernel
(probably the custom dsdt) , after that the boot speed
is normal

2. When I do cat /proc/acpi/battery/BAT0/state it takes
around 2-3 minutes. gnome-batt-status also hangs due to
the same reason.

[Vicky Shrestha]

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I am using Gentoo Linux and the Kernel is 2.6.11-gentoo-r6

I have used the following patches:
acpi-dsdt-initrd-patch-v0.7d-2.6.9.patch
acer-tm4xxx-sbs-cm.diff
acpi-ec-nospinlock-2.6.11.diff

All the hunks succeeded when patching

[Oldrich Jedlicka]

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Same problems with Acer TravelMate 4502WLMi. Takes too long
to read status of battery (status things in /proc/acpi/),
boot process is waiting at the same moments (I mean when the
status is beeing read at kernel boot-up).

Gentoo Linux and vanilla kernel 2.6.11.7 with patches

All-2.6.11.diff (latest v4l patches)
acpi-20050408-2.6.11.diff (latest ACPI)
acpi-dsdt-initrd-patch-v0.7d-2.6.9.patch
acpi-ec-nospinlock-2.6.11.diff

DSDT patched as described in sbs-cm
(acer-tm4xxx-sbs-cm.diff), procedure as described in the forum.

[Oldrich Jedlicka]

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Fix for 2.6.11 is so easy. Problem is in
acpi-ec-nospinlock-2.6.11.diff:

-#define ACPI_EC_UDELAY 100 /* Poll @ 100us increments */
-#define ACPI_EC_UDELAY_COUNT 1000 /* Wait 10ms max. during
EC ops */
+#define ACPI_EC_MSLEEP 100 /* Sleep 1ms between polling */
+#define ACPI_EC_MSLEEP_COUNT 1000 /* Wait 10ms max. during
EC ops */

Look at ACPI_EC_UDELAY which is in microseconds, but
ACPI_EC_MSLEEP should be in milliseconds! So change lines to

+#define ACPI_EC_MSLEEP 1 /* Sleep 1ms between polling */
+#define ACPI_EC_MSLEEP_COUNT 10 /* Wait 10ms max. during EC
ops */

and everything should work (I suppose that comments are
correct!).

[Vicky Shrestha]

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Thanks Oldium,

After making changes to the patch file as you mentioned , it
now running fine.

I think we can close this bug tracker now.

[Roland Tapken]

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It would be nice if someone merges this patch into the tar-file. Btw the
patch works fine with 2.6.12, too :-)