[SOLVED]How to disable USB autosuspend?

Hello!
A long time ago I installed Arch on my notebook and configured it's power saving using laptop-mode-tools. I also installed pm-utils for suspend/hibernate. USB autosuspend worked correctly - on battery every device (including mouse) was suspending and no autosuspend at all on AC. Some time ago, I don't remember when exactly, it stopped working. Now, no matter what, my mouse turns off after 2 seconds.
Here is what I did:
1. Checked my laptop-mode-tools configuration (removed comments for brevity):
cat /etc/laptop-mode/conf.d/usb-autosuspend.conf
DEBUG=0
CONTROL_USB_AUTOSUSPEND="auto"
AUTOSUSPEND_USE_WHITELIST=0
AUTOSUSPEND_USBID_BLACKLIST=""
AUTOSUSPEND_USBTYPE_BLACKLIST=""
AUTOSUSPEND_USBID_WHITELIST=""
AUTOSUSPEND_USBTYPE_WHITELIST=""
BATT_SUSPEND_USB=1
LM_AC_SUSPEND_USB=0
NOLM_AC_SUSPEND_USB=0
AUTOSUSPEND_TIMEOUT=2
So far looks good.
2. According to wiki, pm-utils might conflict with laptop-mode-tools. So I created a dummy file in /etc/pm/power.d for each of the scripts from /usr/lib/pm-utils/power.d . For the moment I don't care if I disabled too much. I just hope laptop-mode-tools covers all powersaving features.
ls -l /etc/pm/power.d
-rw-r--r-- 1 root root 0 08-08 19:58 hal-cd-polling
-rw-r--r-- 1 root root 0 08-08 19:58 intel-audio-powersave
-rw-r--r-- 1 root root 0 08-08 19:58 journal-commit
-rw-r--r-- 1 root root 0 08-08 19:36 laptop-mode
-rw-r--r-- 1 root root 0 08-08 19:58 readahead
-rw-r--r-- 1 root root 0 08-08 19:58 sata_alpm
-rw-r--r-- 1 root root 0 08-08 19:58 sched_powersave
-rw-r--r-- 1 root root 0 08-08 19:58 wireless
-rw-r--r-- 1 root root 0 08-08 19:59 xfs_buffer
ls -l /usr/lib/pm-utils/power.d
-rwxr-xr-x 1 root root 1316 2013-05-30 hal-cd-polling*
-rwxr-xr-x 1 root root 870 2013-05-30 intel-audio-powersave*
-rwxr-xr-x 1 root root 1290 2013-05-30 journal-commit*
-rwxr-xr-x 1 root root 2722 2013-05-30 laptop-mode*
-rwxr-xr-x 1 root root 201 2013-05-30 pcie_aspm*
-rwxr-xr-x 1 root root 1222 2013-05-30 readahead*
-rwxr-xr-x 1 root root 1131 2013-05-30 sata_alpm*
-rwxr-xr-x 1 root root 652 2013-05-30 sched-powersave*
-rwxr-xr-x 1 root root 2495 2013-05-30 wireless*
-rwxr-xr-x 1 root root 1642 2013-05-30 xfs_buffer*
Still no luck.
3. As I found out, there is some kernel option CONFIG_PM_RUNTIME, which allows the kernel to autosuspend usb devices: source. It's on:
cat /proc/config.gz| gunzip | grep CONFIG_USB_SU
CONFIG_USB_SUPPORT=y
And as I read here I can disable usb autosuspend using boot parameter. So i edited my /etc/default.grub, and now my grub.cfg looks like this:
sudo cat /boot/grub/grub.cfg | grep usb
linux /boot/vmlinuz-linux root=UUID=d18cd4a4-2ebf-4874-80ff-8520016b0ed4 rw quiet usbcore.autosuspend=-1
linux /boot/vmlinuz-linux root=UUID=d18cd4a4-2ebf-4874-80ff-8520016b0ed4 rw quiet usbcore.autosuspend=-1
linux /boot/vmlinuz-linux root=UUID=d18cd4a4-2ebf-4874-80ff-8520016b0ed4 rw quiet usbcore.autosuspend=-1
After rebooting I checked:
cat /sys/module/usbcore/parameters/autosuspend
-1
Cool! It should work! But... it doesn't. The mouse still goes to sleep after 2 seconds, and:
kolzi@kolzi-laptop ~ % for i in /sys/bus/usb/devices/*/power/autosuspend_delay_ms; do cat $i;done
2000
2000
2000
2000
2000
2000
2000
2000
2000
kolzi@kolzi-laptop ~ % for i in /sys/bus/usb/devices/*/power/autosuspend; do cat $i;done
2
2
2
2
2
2
2
2
2
Where doesn't this 2 (or 2000) come from? How disable this suspending and let laptop-mode-tools control it? What's going on?
Last edited by PL_kolek (2014-08-09 13:14:23)

For now I run
sudo systemctl disable laptop-mode.service
and changed in /etc/laptop-mode/laptop-mode.conf
ENABLE_LAPTOP_MODE_TOOLS=0
After rebooting I still have the same issues. Also, even after disabling laptop-mode-tools, the brightness changes after unplugging the laptop, so either the laptop mode wasn't disabled at all, or there is something else 'helping' me with powersaving.
@brebs
Thank you, but it looks for me more like a workaround than a solution. It could work, but it doesn't tell me what disables my mouse and where is the root of the problem.
Last edited by PL_kolek (2014-08-09 12:39:39)

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