I'm trying to run webgl apps in my web browser but whenever I try to, nothing happens. I found that
ubuntu-restricted-extras can be installed to enable webgl. One of my friends installed the package on their system and was able to run the webgl app that I was trying to run. When I tried to install the package using the Ubuntu software center, the download stalled so I had to kill the process.
sudo apt-get install ubuntu-restricted-extras
Reading package lists... Done Building dependency tree Reading state information... Done ubuntu-restricted-extras is already the newest version. The following packages were automatically installed and are no longer required: python-cssselect python-queuelib python-w3lib Use 'apt-get autoremove' to remove them. The following packages will be upgraded: ttf-mscorefonts-installer 1 upgraded, 0 newly installed, 0 to remove and 145 not upgraded. 1 not fully installed or removed. Need to get 0 B/27.8 kB of archives. After this operation, 134 kB of additional disk space will be used. debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable (Reading database ... 286934 files and directories currently installed.) Preparing to unpack .../ttf-mscorefonts-installer_3.4+nmu1ubuntu1_all.deb ... debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable dpkg: error processing archive /var/cache/apt/archives/ttf-mscorefonts-installer_3.4+nmu1ubuntu1_all.deb (--unpack): subprocess new pre-installation script returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/ttf-mscorefonts-installer_3.4+nmu1ubuntu1_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1)
apt-cache policy ubuntu-restricted-extras
$ apt-cache policy ubuntu-restricted-extras ubuntu-restricted-extras: Installed: 60.1 Candidate: 60.1 Version table: *** 60.1 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/multiverse amd64 Packages 100 /var/lib/dpkg/status 60 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/multiverse amd64 Packages
What is causing the problem with the installation?