При выполнении команды apt-get update выскакивает ошибка,как это исправить:
movsar@movsar-Presario-CQ56-Notebook-PC:~$ sudo apt-get update
[sudo] password for movsar:
Hit:1 http://ru.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://repo.yandex.ru/yandex-browser/deb beta InRelease
Hit:3 http://ru.archive.ubuntu.com/ubuntu xenial-updates InRelease
Ign:4 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:5 http://ru.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:6 http://ppa.launchpad.net/cdemu/ppa/ubuntu xenial InRelease
Hit:7 http://repo.acestream.org/ubuntu trusty InRelease
Ign:8 http://download.opensuse.org/repositories/home:/jgeboski/xUbuntu_16.04 ./ InRelease
Ign:9 http://kxstudio.linuxaudio.org/repo stable InRelease
Hit:10 http://dl.google.com/linux/chrome/deb stable Release
Hit:11 http://download.opensuse.org/repositories/home:/jgeboski/xUbuntu_16.04 ./ Release
Hit:12 http://kxstudio.linuxaudio.org/repo stable Release
Get:13 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Get:14 http://download.opensuse.org/repositories/home:/jgeboski/xUbuntu_16.04 ./ Release.gpg [481 B]
Hit:15 http://ppa.launchpad.net/kamilion/ubuntu-builder/ubuntu xenial InRelease
Hit:16 http://ppa.launchpad.net/kxstudio-debian/libs/ubuntu lucid InRelease
Hit:17 http://ppa.launchpad.net/kxstudio-debian/music/ubuntu lucid InRelease
Hit:18 http://ppa.launchpad.net/kxstudio-debian/plugins/ubuntu lucid InRelease
Hit:19 http://ppa.launchpad.net/kxstudio-debian/apps/ubuntu lucid InRelease
Hit:20 http://ppa.launchpad.net/kxstudio-debian/kxstudio/ubuntu lucid InRelease
Hit:21 http://ppa.launchpad.net/kxstudio-debian/libs/ubuntu trusty InRelease
Hit:22 http://ppa.launchpad.net/kxstudio-debian/music/ubuntu trusty InRelease
Hit:24 http://ppa.launchpad.net/kxstudio-debian/plugins/ubuntu trusty InRelease
Hit:26 http://ppa.launchpad.net/kxstudio-debian/apps/ubuntu trusty InRelease
Hit:27 http://ppa.launchpad.net/kxstudio-debian/kxstudio/ubuntu trusty InRelease
Ign:14 http://download.opensuse.org/repositories/home:/jgeboski/xUbuntu_16.04 ./ Release.gpg
Hit:28 http://ppa.launchpad.net/linrunner/tlp/ubuntu xenial InRelease
Hit:29 http://ppa.launchpad.net/purple-vk-plugin/dev/ubuntu devel InRelease
Hit:30 http://ppa.launchpad.net/starws-box/deadbeef-player/ubuntu xenial InRelease
Hit:31 http://ppa.launchpad.net/webupd8team/brackets/ubuntu xenial InRelease
Hit:32 http://ppa.launchpad.net/webupd8team/nemo/ubuntu xenial InRelease
Hit:33 http://ppa.launchpad.net/yktooo/ppa/ubuntu xenial InRelease
Fetched 103 kB in 5s (18,5 kB/s)
Reading package lists... Done
W: http://repo.acestream.org/ubuntu/dists/trusty/InRelease: Signature by key E1254F21D636B7EFDE41D2AF50E2BCF0E3805CD8 uses weak digest algorithm (SHA1)
W: GPG error: http://download.opensuse.org/repositories/home:/jgeboski/xUbuntu_16.04 ./ Release: The following signatures were invalid: KEYEXPIRED 1506804343
W: The repository 'http://download.opensuse.org/repositories/home:/jgeboski/xUbuntu_16.04 ./ Release' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: http://ppa.launchpad.net/purple-vk-plugin/dev/ubuntu/dists/devel/InRelease: Signature by key 19D50CD44DC39633E7C95E083BB81B5F5035D59E uses weak digest algorithm (SHA1)
movsar@movsar-Presario-CQ56-Notebook-PC:~$