在运行 Debian 的 macbook pro 上读卡会消耗我的电量

Question

我目前使用的是 macbook pro，但操作系统是 debian 8.2 而不是 os x

我正在使用 macbook pro，但有一款设备耗电量很大。此 USB 设备：读卡器（Apple）

 32.5 W    100.0%                      Device         USB device: Card Reader (Apple)
  2.60 W    100.0%                      Device         Radio device: btusb
  209 mW     19.7 pkts/s                Device         Network interface: wlan0 (wl)

这个设备真的耗尽了我的电池，我注意到我的笔记本电脑在不插电的情况下甚至无法使用 2 小时，我安装了 powertop。做了所有推荐的更改，但此设备，我不知道如何禁用它。我什至不使用那个阅读器，忘记了它在那里。

我将所有设备配置为在 rc.local 中使用有限的电源

echo '0' > '/proc/sys/kernel/nmi_watchdog'
echo 'min_power' > '/sys/class/scsi_host/host0/link_power_management_policy'
echo '1' > '/sys/module/snd_hda_intel/parameters/power_save'
echo '1500' > '/proc/sys/vm/dirty_writeback_centisecs'
echo 'auto' > '/sys/bus/usb/devices/2-4/power/control'
echo 'auto' > '/sys/bus/usb/devices/1-12/power/control'
echo 'auto' > '/sys/bus/usb/devices/1-8.3/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1f.3/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:01:00.1/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.3/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.4/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.2/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1b.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:16.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:14.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:01.1/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:01.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:01:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:08:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:07:06.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:07:05.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:07:04.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:07:03.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:07:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:06:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:05:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:04:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:03:00.0/power/control'
echo 'auto' > '/sys/bus/pci/devices/0000:00:1f.0/power/control'

我怎样才能让这个设备正常运行或完全禁用它，因为我没有使用过它。

Answer 1

在USB 电源管理内核文档中，您将找到与端口设备相关的断电先决条件设置的摘要：

echo 0 > power/pm_qos_no_power_off
echo 0 > peer/power/pm_qos_no_power_off # if it exists
echo auto > power/control # this is the default value
echo auto > <child>/power/control
echo 1 > <child>/power/persist # this is the default value