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  1. These are instructions that worked for my ubuntu 12.04-based XBMC HTPC. None of the other howtos I could find actually worked for me. Recent ubuntus (e.g. 12.04 or later) use udev and automatically query the "wakeup" capability of USB devices, and allow setting the "wakeup" property of the device only if it supports it. The "stable" FLIRC firmware does not expose the "wakeup" capability to the kernel. Only later "fw_wakeup" betas do (starting in v2 I think). Anyhow - here is the procedure that did the trick for me - YMMV but at least this will give you some hopefully useful pointers :) For wake-up to work with newer ubuntu’s with udev, the “Wake Up Firmware v6” is required. This method works in recent ubuntus (e.g. 12.04 or later) Connect FLIRC to the HTPC - then do: ..... Bus 005 Device 003: ID 20a0:0001 Clay Logic Note: Bus 5, Device 2. Note also: Vendor ID: 20a0; Device ID: 0001 lsusb -t …. /: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/5p, 12M |__ Port 4: Dev 3, If 0, Class=HID, Driver=usbhid, 1.5M |__ Port 4: Dev 3, If 1, Class=vend., Driver=, 1.5M Note: Bus 05, Port 4 Now if flashed with a “recent wake up” firmware, FLIRC will advertise via USB that it can wake up the machine, and this can be verified by querying the “power” capabilities of “Bus 05, Port 4”: ls /sys/bus/usb/devices/5-4/power active_duration control runtime_enabled wakeup_active wakeup_max_time_ms async level runtime_status wakeup_active_count wakeup_total_time_ms autosuspend persist runtime_suspended_time wakeup_count autosuspend_delay_ms runtime_active_kids runtime_usage wakeup_hit_count connected_duration runtime_active_time wakeup wakeup_last_time_ms If “wakeup” shows up in the listing, all is good. With the original “non-wakeup” firmware, no wakeup capability was showing up. Note: the old (pre udev) way of activating wakeup (sh -c 'echo "USB4" > /proc/acpi/wakeup') no longer works in ubuntu 12.04+ Now we can manually test if wakeup works by doing (note the use of the "bus" and the "port" addresses): echo enabled > /sys/bus/usb/devices/5-4/power/wakeup Suspend / resume should now work. This could be added to rc.local - the problem with this approach is that if the FLIRC is moved to a different USB port, wakeup won’t work. The best approach is to create a new udev rule: cd /etc/udev/rules.d/ vi 90-flircwakeup.rules SUBSYSTEM=="usb", ATTRS{idVendor}=="20a0", ATTRS{idProduct}=="0001" RUN+="/bin/sh -c 'echo enabled > /sys$env{DEVPATH}/../power/wakeup'" This will allow wake for the FLIRC no matter where it is connected. Note that for wake up to work, the “wake up” key has to be recorded using the “flirc” utility.
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