初期状態
$ cat /proc/acpi/wakeup | grep enable
EHC1 S3 *enabled pci:0000:00:1d.0
XHC S3 *enabled pci:0000:00:14.0
PWRB S3 *enabled platform:PNP0C0C:00
SLPB S3 *enabled platform:PNP0C0E:00
LID0 S3 *enabled platform:PNP0C0D:00
設定の変更
$ sudo echo XHC > /proc/acpi/wakeup
$ sudo echo EHC1 > /proc/acpi/wakeup
結果
$ cat /proc/acpi/wakeup | grep "XHC\|EHC1"
EHC1 S3 *disabled pci:0000:00:1d.0
XHC S3 *disabled pci:0000:00:14.0
「XHC」と「EHC1」が両方disabledになればおk