最新的内核导致我的声音出现问题，在旧版本上运行良好。因为我只安装了 Ubuntu，所以 Grub 在启动时没有显示。如何在启动时手动选择我的内核版本？
我正在使用 Ubuntu 19.04。我知道问题Ubuntu 18.04 Unable to install Viber，但是当我尝试通过安装
sudo dpkg -i viber.deb
我明白了：
Selecting previously unselected package viber.
(Reading database ... 206700 files and directories currently installed.)
Preparing to unpack viber.deb ...
Unpacking viber (10.3.0.37) ...
dpkg: dependency problems prevent configuration of viber:
viber depends on libssl1.0.0; however:
Package libssl1.0.0 is not installed.
dpkg: error processing package viber (--install):
dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.32.0-1ubuntu1) ...
Processing triggers for desktop-file-utils (0.23-4ubuntu1) ...
Processing triggers …