tried to install skype and got this

[Marc Barten]

The following packages have unmet dependencies:
 skypeforlinux:amd64 : Depends: libasound2:amd64 (>= 1.0.16) but it is not installable
                       Depends: libatk1.0-0:amd64 (>= 1.12.4) but it is not installable
                       Depends: libc6:amd64 (>= 2.17) but it is not installable
                       Depends: libcairo2:amd64 (>= 1.6.0) but it is not installable
                       Depends: libcups2:amd64 (>= 1.4.0) but it is not installable
                       Depends: libexpat1:amd64 (>= 2.0.1) but it is not installable
                       Depends: libgcc1:amd64 (>= 1:4.0) but it is not installable
                       Depends: libgconf-2-4:amd64 (>= 3.2.5) but it is not installable
                       Depends: libgdk-pixbuf2.0-0:amd64 (>= 2.22.0) but it is not installable
                       Depends: libglib2.0-0:amd64 (>= 2.35.8) but it is not installable
                       Depends: libgtk-3-0:amd64 (>= 3.9.10) but it is not installable
                       Depends: libnspr4:amd64 (>= 2:4.9-2~) but it is not installable
                       Depends: libnss3:amd64 (>= 2:3.13.4-2~) but it is not installable
                       Depends: libpango-1.0-0:amd64 (>= 1.14.0) but it is not installable
                       Depends: libpangocairo-1.0-0:amd64 (>= 1.14.0) but it is not installable
                       Depends: libsecret-1-0:amd64 (>= 0.7) but it is not installable
                       Depends: libx11-6:amd64 (>= 2:1.4.99.1) but it is not installable
                       Depends: libx11-xcb1:amd64 but it is not installable
                       Depends: libxcb1:amd64 (>= 1.6) but it is not installable
                       Depends: libxcomposite1:amd64 (>= 1:0.3-1) but it is not installable
                       Depends: libxcursor1:amd64 (> 1.1.2) but it is not installable
                       Depends: libxdamage1:amd64 (>= 1:1.1) but it is not installable
                       Depends: libxext6:amd64 but it is not installable
                       Depends: libxfixes3:amd64 but it is not installable
                       Depends: libxi6:amd64 (>= 2:1.2.99.4) but it is not installable
                       Depends: libxrandr2:amd64 (>= 2:1.2.99.3) but it is not installable
                       Depends: libxrender1:amd64 but it is not installable
                       Depends: libxss1:amd64 but it is not installable
                       Depends: libxtst6:amd64 but it is not installable
                       Depends: apt-transport-https:amd64 but it is not installable
                       Depends: libfontconfig1:amd64 (>= 2.11.0) but it is not installable
                       Depends: libdbus-1-3:amd64 (>= 1.6.18) but it is not installable
                       Depends: libstdc++6:amd64 (>= 4.8.1) but it is not installable
N: Ignoring file '50unattended-upgrades.merge-error' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension
E: Unable to correct problems, you have held broken packages.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic i686
.tmp.unity_support_test.0:

ApportVersion: 2.20.9-0ubuntu7.5
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Tue Jan 29 16:24:10 2019
DistUpgraded: 2018-09-02 09:29:06,755 DEBUG icon theme changed, re-reading
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated Graphics Controller [103c:1526]
   Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated Graphics Controller [103c:1526]
InstallationDate: Installed on 2017-04-11 (657 days ago)
InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release i386 (20160803)
MachineType: Hewlett-Packard HP 620
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID=64d43abe-1712-45a1-929c-7685beb99496 ro drm.debug=0xe plymouth:debug
SourcePackage: xorg
UpgradeStatus: Upgraded to bionic on 2018-09-02 (149 days ago)
dmi.bios.date: 09/06/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PVI Ver. F.06
dmi.board.name: 1526
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 71.0D
dmi.chassis.asset.tag: CNU0430H3H
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PVIVer.F.06:bd09/06/2010:svnHewlett-Packard:pnHP620:pvrF.06:rvnHewlett-Packard:rn1526:rvrKBCVersion71.0D:cvnHewlett-Packard:ct10:cvr:
dmi.product.family: 103C_5336AN
dmi.product.name: HP 620
dmi.product.version: F.06
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Sun Sep 2 08:23:08 2018
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 685
 vendor LGD
xserver.version: 2:1.18.4-0ubuntu0.7

[Daniel van Vugt (vanvugt)]

It sounds like you might have downloaded skypeforlinux from an unsupported location. Where did you get it?

[Launchpad Janitor (janitor)]

[Expired for Ubuntu because there has been no activity for 60 days.]