触摸板无法识别
我买了一台新的笔记本电脑（Medion Akoya P6647 MD98567），但触摸板无法识别。
$ uname -a Linux bookx539 3.15.0-031500-generic #201406131105 SMP Fri Jun 13 15:06:46 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux $ cat /proc/bus/input/devices I: Bus=0019 Vendor=0000 Product=0005 Version=0000 N: Name="Lid Switch" P: Phys=PNP0C0D/button/input0 S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0 U: Uniq= H: Handlers=event0 B: PROP=0 B: EV=21 B: SW=1 I: Bus=0019 Vendor=0000 Product=0003 Version=0000 N: Name="Sleep Button" P: Phys=PNP0C0E/button/input0 S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input1 U: Uniq= H: Handlers=kbd event1 B: PROP=0 B: EV=3 B: KEY=4000 0 0 I: Bus=0019 Vendor=0000 Product=0001 Version=0000 N: Name="Power Button" P: Phys=LNXPWRBN/button/input0 S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2 U: Uniq= H: Handlers=kbd event2 B: PROP=0 B: EV=3 B: KEY=10000000000000 0 I: Bus=0011 Vendor=0001 Product=0001 Version=ab83 N: Name="AT Translated Set 2 keyboard" P: Phys=isa0060/serio0/input0 S: Sysfs=/devices/platform/i8042/serio0/input/input3 U: Uniq= H: Handlers=sysrq kbd event3 B: PROP=0 B: EV=120013 B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe B: MSC=10 B: LED=7 I: Bus=0000 Vendor=0000 Product=0000 Version=0000 N: Name="HDA Intel PCH Mic" P: Phys=ALSA S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card1/input4 U: Uniq= H: Handlers=event4 B: PROP=0 B: EV=21 B: SW=10 I: Bus=0000 Vendor=0000 Product=0000 Version=0000 N: Name="HDA Intel PCH Headphone" P: Phys=ALSA S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card1/input5 U: Uniq= H: Handlers=event5 B: PROP=0 B: EV=21 B: SW=4 I: Bus=0003 Vendor=04f2 Product=b3a3 Version=5465 N: Name="USB2.0 HD UVC WebCam" P: Phys=usb-0000:00:14.0-10/button S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-10/3-10:1.0/input/input6 U: Uniq= H: Handlers=kbd event6 B: PROP=0 B: EV=3 B: KEY=100000 0 0 0 I: Bus=0019 Vendor=0000 Product=0006 Version=0000 N: Name="Video Bus" P: Phys=LNXVIDEO/video/input0 S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:13/LNXVIDEO:00/input/input7 U: Uniq= H: Handlers=kbd event7 B: PROP=0 B: EV=3 B: KEY=3e000b00000000 0 0 0 I: Bus=0019 Vendor=0000 Product=0006 Version=0000 N: Name="Video Bus" P: Phys=LNXVIDEO/video/input0 S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input8 U: Uniq= H: Handlers=kbd event8 B: PROP=0 B: EV=3 B: KEY=3e000b00000000 0 0 0 I: Bus=0000 Vendor=0000 Product=0000 Version=0000 N: Name="HDA Intel HDMI HDMI/DP,pcm=3" P: Phys=ALSA S: Sysfs=/devices/pci0000:00/0000:00:03.0/sound/card0/input9 U: Uniq= H: Handlers=event9 B: PROP=0 B: EV=21 B: SW=140 I: Bus=0000 Vendor=0000 Product=0000 Version=0000 N: Name="HDA Intel HDMI HDMI/DP,pcm=7" P: Phys=ALSA S: Sysfs=/devices/pci0000:00/0000:00:03.0/sound/card0/input10 U: Uniq= H: Handlers=event10 B: PROP=0 B: EV=21 B: SW=140 I: Bus=0000 Vendor=0000 Product=0000 Version=0000 N: Name="HDA Intel HDMI HDMI/DP,pcm=8" P: Phys=ALSA S: Sysfs=/devices/pci0000:00/0000:00:03.0/sound/card0/input11 U: Uniq= H: Handlers=event11 B: PROP=0 B: EV=21 B: SW=140 I: Bus=0003 Vendor=192f Product=0916 Version=0111 N: Name="USB Optical Mouse" P: Phys=usb-0000:00:14.0-4/input0 S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.0/0003:192F:0916.0001/input/input12 U: Uniq= H: Handlers=mouse0 event12 B: PROP=0 B: EV=17 B: KEY=70000 0 0 0 0 B: REL=103 B: MSC=10 我将内核从13.13更新到13.15，但它没有改变任何东西。
经过一些更多的研究后，我找到了一个解决方案， 这个解决方案在这个用德语描述
您必须将i8042.reset i8042.nomux i8042.nopnp i8042.noloop添加到内核启动选项。 您可以通过将这些参数添加到文件/etc/default/grub的GRUB_CMDLINE_LINUX_DEFAULT属性来永久执行此操作。
然后它看起来像这样。
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.reset i8042.nomux i8042.nopnp i8042.noloop"
之后，您只需输入此命令并重新启动：
sudo update-grub