我使用的是 Ubuntu 20.10。突然间，VLC 无法启动。当尝试通过命令行运行它时，我得到：
$ vlc
VLC media player 3.0.12.1 Vetinari (revision 3.0.12.1-0-g170157402b)
[00005573fa81cb40] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Qt: Session management error: Could not open network socket
Fontconfig warning: FcPattern object weight does not accept value [40 200)
Segmentation fault (core dumped)
通过 snap 安装时，vlc 无法启动。如果我从命令行尝试，我会收到以下错误。
$ vlc
VLC media player 3.0.11 Vetinari (revision 3.0.11-0-gdc0c5ced72)
[000055762720bb40] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Qt: Session management error: None of the authentication protocols specified are supported
Fontconfig warning: FcPattern object weight does not accept value [40 200)
Segmentation fault (core dumped)
触控板停止工作，但蓝牙鼠标照常工作。仅在登录后发生。
xinput输出：
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ DLL075B:01 06CB:76AF Mouse id=11 [slave pointer (2)]
⎜ ↳ DLL075B:01 06CB:76AF Touchpad id=12 [slave pointer (2)]
⎜ ↳ Designer Mouse id=18 [slave pointer (2)]
⎜ ↳ Designer Keyboard Consumer Control id=22 [slave pointer (2)]
和 12 这里是道具：
Device 'DLL075B:01 06CB:76AF Touchpad':
Device Enabled (148): 1
Coordinate Transformation Matrix (150): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Tapping Enabled (302): 1
libinput Tapping Enabled Default (303): 0
libinput Tapping Drag Enabled (304): 1
libinput Tapping Drag Enabled Default (305): 1
libinput Tapping Drag Lock Enabled (306): 0
libinput Tapping Drag Lock Enabled Default (307): 0
libinput Tapping Button Mapping Enabled (308): 1, 0
libinput Tapping Button Mapping Default (309): 1, 0
libinput Natural Scrolling Enabled (286): 1
libinput Natural Scrolling Enabled Default (287): 0
libinput Disable While Typing Enabled (310): 1
libinput Disable While Typing Enabled Default (311): 1
libinput Scroll Methods Available (288): 1, 1, 0
libinput Scroll Method Enabled (289): 1, 0, 0
libinput Scroll Method Enabled Default (290): 1, 0, 0
libinput Click Methods Available (312): 1, 1
libinput Click Method Enabled (313): 1, 0
libinput Click Method Enabled Default (314): 1, 0
libinput Middle Emulation Enabled (315): 0
libinput Middle Emulation Enabled Default (316): 0
libinput Accel Speed (293): 0.000000
libinput Accel Speed Default (294): 0.000000
libinput Left Handed Enabled (298): 0
libinput Left Handed Enabled Default (299): 0
libinput Send Events Modes Available (271): 1, 1
libinput Send Events Mode Enabled (272): 1, 0
libinput Send Events Mode Enabled Default (273): 0, 0
Device Node (274): "/dev/input/event7"
Device Product ID (275): 1739, 30383
libinput Drag Lock Buttons (300): <no items>
libinput Horizontal Scroll Enabled (301): 1
如何进一步修复/调试它？
tl;dr：每个apt-get命令都因此而失败：
Depends: libgl1-mesa-dri (= 10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is to be installed
我无法删除或安装任何东西。我应该怎么办？
很长的故事：
我正在使用 Ubuntu 14.10，昨天我尝试按照本手册操作：https ://github.com/MobileChromeApps/mobile-chrome-apps/blob/master/docs/Installation.md
最后搞砸了一些东西。我在任务栏上的时钟旁边有一个停止标志，上面写着“请运行包管理器”和“包具有未满足的依赖关系”
sudo apt-get upgrade停止工作（update但似乎正在工作）。
我试图删除包但sudo apt-get remove停止工作，这是我得到的错误：
Reading package lists... Done Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
libegl1-mesa : Depends: libgl1-mesa-dri (=10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is to be installed
libgbm1 : Depends: libgl1-mesa-dri (= 10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is to be installed
libgl1-mesa-glx : Depends: libgl1-mesa-dri (= 10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
运行sudo apt-get insall -f给出了这个：
libegl1-mesa : Depends: libgl1-mesa-dri (= 10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is installed
libgbm1 : Depends: libgl1-mesa-dri (= 10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is installed
libgl1-mesa-glx : Depends: libgl1-mesa-dri (= 10.5~git1411191810.9460cd~gd~u) but 10.4~git1411171930.920f87~gd~u is installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
E: Unable to correct dependencies
使用dpkg也不起作用：
$ sudo dpkg -r libegl1-mesa
dpkg: dependency problems prevent removal of libegl1-mesa:amd64:
libwayland-egl1-mesa:amd64 depends on libegl1-mesa (= 10.5~git1411191810.9460cd~gd~u).
libgstreamer-plugins-bad1.0-0:amd64 depends on libegl1-mesa (>= 7.8.1) | libegl1-x11; however:
Package libegl1-mesa:amd64 is to be removed.
Package libegl1-x11 is not installed.
Package libegl1-mesa:amd64 which provides libegl1-x11 is to be removed.
libcogl20:amd64 depends on libegl1-mesa (>= 7.8.1) | libegl1-x11; however:
Package libegl1-mesa:amd64 is to be removed.
Package libegl1-x11 is not installed.
Package libegl1-mesa:amd64 which provides libegl1-x11 is to be removed.
libegl1-mesa-drivers:amd64 depends on libegl1-mesa (=> 10.5~git1411191810.9460cd~gd~u).
libqt5gui5:amd64 depends on libegl1-mesa (>= 7.8.1) | libegl1-x11; however:
Package libegl1-mesa:amd64 is to be removed.
Package libegl1-x11 is not installed.
Package libegl1-mesa:amd64 which provides libegl1-x11 is to be removed.
xserver-xorg-core depends on libegl1-mesa | libegl1; ho
dpkg: error processing package libegl1-mesa:amd64 (--remove): dependency problems - not removing Errors were encountered while processing:
libegl1-mesa:amd64
更新：
我以某种方式解决了它，我不确定如何解决，所以我将描述我所做的一切：
输入software-properties-gtk终端并选中 ubuntu 软件选项卡上的所有复选框，然后转到其他软件，取消选中并删除所有显示“在 utopic 上禁用”的复选框，选中所有对我有意义的（chrome dropbox 等），然后做了sudo apt-get install -f，一切似乎再次工作。
但是 - 重新启动后，我看到黑屏和闪烁的光标。也许是图形驱动程序问题？