Take the 2-minute tour ×
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's 100% free, no registration required.

I'd like to wakeup my system via keyboard or mouse. This can be done via /proc/acpi/wakeup and a simple

echo DEVNAME > /proc/acpi/wakeup

my wakeup file looks like this

       Device   S-state   Status   Sysfs node
  ---------------------------------------
  1. P0P2     S4    *disabled  pci:0000:00:01.0
  2. P0P3     S4    *disabled  
  3. P0P1     S4    *disabled  pci:0000:00:1e.0
  4. UAR1     S4    *disabled  pnp:00:0c
  5. EUSB     S4    *disabled  pci:0000:00:1d.7
  6. USBE     S4    *disabled  pci:0000:00:1a.7
  7. P0P5     S4    *disabled  
  8. P0P6     S4    *disabled  
  9. P0P7     S4    *disabled  
  10. P0P8    S4    *disabled  pci:0000:00:1c.4
  11. P0P9    S4    *disabled  pci:0000:00:1c.5
  12. GBEC    S4    *disabled  
  13. USB0    S4    *disabled  pci:0000:00:1d.0
  14. USB1    S4    *disabled  pci:0000:00:1d.1
  15. USB2    S4    *disabled  pci:0000:00:1d.2
  16. USB3    S4    *disabled  
  17. USB4    S4    *disabled  pci:0000:00:1a.0
  18. USB5    S4    *disabled  pci:0000:00:1a.1
  19. USB6    S4    *disabled  pci:0000:00:1a.2
  20. P0P4    S4    *disabled  pci:0000:00:1c.0

My question is: How can I find out which (USB) device belongs to my mouse/keyboard? I failed with lsusb so far, but maybe I just missed the right switches.

share|improve this question
    
You can't go too far wrong by just enabling all of your usb ports. Or you can enable one at a time until you find the one that makes it work. –  psusi Jul 29 '11 at 19:18
add comment

2 Answers

up vote 1 down vote accepted

Ok, I've found a way, though it does not look very clean ;)

I'll start from the end - running this one-liner will tell you the truth:

grep "USB.*pci" /proc/acpi/wakeup | cut -d ':' -f 2- | while read aaa; do find /dev/.udev -name "*$aaa*" -print -exec grep "$aaa" /proc/acpi/wakeup \; -exec echo \; ; done

Nice, isn't it? And here is, how it works:

  • The beginning should be obvious: grep "USB.*" /proc/acpi/wakeup extracts from the list only USB devices that have a known sysfs node.
  • cut -d ':' -f 2- leaves just the ending (numbers) after 'pci:' on each line.
  • Then, for each ending (aaa=0000:00:1d.2 and so on), try to find an udev device symlink that contains the string.
  • For each device symlink found, the find command :
    • prints the name of udev symlink, <-- this is the most useful part
    • executes grep to display the line from /proc/acpi/wakeup that corresponds to the found device,
    • appends a blank line for output clarity.

So, thanks to the meaningful naming of device symlinks by udev, you can tell which USB device is the keyboard, mouse etc.

share|improve this answer
add comment
grep `ls /dev/input/by-path/*-mouse | head -1 | cut -d- -f 3` /proc/acpi/wakeup | gawk '{print $1}'

This finds the input device for your mouse, then looks up the PCI ID in /proc/acpi/wakeup to give you the name. In fact, you could just redirect the output of that command back to /proc/acpi/wakeup in order to enable wakeups from that device.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.