[Debian-eeepc-devel] Bug#605246: Built-in 3G modem can prevent sleep mode

Maik Zumstrull maik at zumstrull.net
Sun Nov 28 13:22:32 UTC 2010


Package: eeepc-acpi-scripts
Version: 1.1.11

On the EeePC 1005HAG, the builtin 3G modem (12d1:1001 Huawei
Technologies Co., Ltd. E620 USB Modem) prevents the device from
staying in sleep mode. It goes to sleep fine, according to the logs,
but immediately wakes up. I suspected that the 3G modem is causing
this, because it seems to work for the models without built-in 3G,
according to various reports out there.

I tried putting the device to sleep after telling the kernel to ignore
USB wakeup requests from the 3G modem, and it works, apparently
without nasty side effects, the 3G still works after. I think
eeepc-acpi-scripts should include a sleep.d hook to do this. It's not
enough to set this once at boot, the flag resets itself when returning
from sleep mode. I've attached my own quick-hack attempt at doing
this, feel free to use it, use it as a template, or discard it and
write your own.
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