I can neither open nor uninstall Steam (Ubuntu 16.04 LTS)

Question

My Steam have apparently become completely unfunctional: If I try to open it, the icon flashes for a few seconds and nothing happens afterwards. If I try to uninstall it (Ubuntu Icon >> Search for 'Steam' >> Right button >> Uninstall), there are also no results.

I'm very new to Ubuntu and I've recently upgraded it to the last version expecting it was the right thing to do, but I don't know if it was really. Do any of you guys know how to fix this?

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Edit:

Thank you both for your replies.

I've tried typing 'steam' on the terminal. A bunch of messages then appeared and it upgraded Steam (I think) and opened it. I closed everything and restarted the computer. Now I can open Steam, but every time I do so a warning pops up saying:

    home/egavs/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-genu/libtinfo.so.5: no version information available (required by bash)
    Your steam package is out of date. Please get an updated version from your package provider or directly from http://repo.steampowered.com/steam for supported distributions.
    Press enter to continue

When I press Enter, the message closes. Steam is a bit slow and sometimes it not even connects to the network. Also, I still can't uninstall it in the way I first tried. Nothing shows up when I type lspci | grep VGA in the terminal. When I type 'steam' on the terminal now, Steam opens and the following appears (SPM is my computer's name):

egavs@SPM:/$ steam
Running Steam on ubuntu 16.04 64-bit
STEAM_RUNTIME is enabled automatically
/bin/bash: /home/egavs/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu/libtinfo.so.5: no version information available (required by /bin/bash)
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Gtk-Message: Failed to load module "gail"
Gtk-Message: Failed to load module "atk-bridge"
Gtk-Message: Failed to load module "unity-gtk-module"
Installing breakpad exception handler for appid(steam)/version(1465948400)
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
[0706/231122:ERROR:main_delegate.cc(779)] Could not load cef_extensions.pak
[0706/231122:ERROR:browser_main_loop.cc(217)] Running without the SUID sandbox! See https://chromium.googlesource.com/chromium/src/+/master/docs/linux_suid_sandbox_development.md for more information on developing with the sandbox on.
Installing breakpad exception handler for appid(steamwebhelper)/version(20160614232302)
Installing breakpad exception handler for appid(steamwebhelper)/version(1465946582)
[0706/231122:ERROR:main_delegate.cc(779)] Could not load cef_extensions.pak
Installing breakpad exception handler for appid(steamwebhelper)/version(20160614232302)
Installing breakpad exception handler for appid(steamwebhelper)/version(1465948400)
Installing breakpad exception handler for appid(steamwebhelper)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
Created shared memory when not owner SteamController_Shared_mem
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)

** (steam:4043): WARNING **: Unknown device type 14

** (steam:4043): WARNING **: Could not create object for /org/freedesktop/NetworkManager/Devices/1: unknown object type
Installing breakpad exception handler for appid(steam)/version(1465948400)

** (steam:4043): WARNING **: Ignoring invalid property 'secondaries'

** (steam:4043): WARNING **: Ignoring invalid property 'autoconnect-priority'

** (steam:4043): WARNING **: Ignoring invalid property 'route-data'

** (steam:4043): WARNING **: Ignoring invalid property 'address-data'

** (steam:4043): WARNING **: Ignoring invalid property 'route-data'

** (steam:4043): WARNING **: Ignoring invalid property 'address-data'
Generating new string page texture 2: 48x256, total string texture memory is 49,15 KB
Generating new string page texture 3: 384x256, total string texture memory is 442,37 KB
Installing breakpad exception handler for appid(steam)/version(1465948400)
Installing breakpad exception handler for appid(steam)/version(1465948400)
roaming config store loaded successfully - 619 bytes.
migrating temporary roaming config store
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
Installing breakpad exception handler for appid(steam)/version(1465948400)
Failed to init SteamVR because it isn't installed
ExecCommandLine: ""/home/egavs/.local/share/Steam/ubuntu12_32/steam" "
Installing breakpad exception handler for appid(steam)/version(1465948400)
System startup time: 4,04 seconds
bash: /home/egavs/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu/libtinfo.so.5: no version information available (required by bash)
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
Warning: Your steam package is out of date. Please get an updated version from your package provider or directly from http://repo.steampowered.com/steam for supported distributions.
Generating new string page texture 73: 256x256, total string texture memory is 704,51 KB
Generating new string page texture 74: 128x256, total string texture memory is 835,58 KB
Generating new string page texture 75: 128x256, total string texture memory is 131,07 KB
Generating new string page texture 76: 64x256, total string texture memory is 901,12 KB
Generating new string page texture 77: 32x256, total string texture memory is 933,89 KB
Running Steam on ubuntu 16.04 64-bit
STEAM_RUNTIME has been set by the user to: /home/egavs/.local/share/Steam/ubuntu12_32/steam-runtime
/bin/bash: /home/egavs/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu/libtinfo.so.5: no version information available (required by /bin/bash)
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
/usr/bin/ldd: line 119: printf: write error: Broken pipe
ExecCommandLine: "/home/egavs/.steam/root/ubuntu12_32/steam steam://open/driverhelperready"
ExecSteamURL: "steam://open/driverhelperready"

Should I download one of the suggested packages? They don't seem to be for version 16.04.

Solution

Thank you all. The problem is now solved.

I've reinstalled Steam and followed the suggestion here: Steam not opening in Ubuntu 16.04 LTS

If you just installed Steam then go to ~/.steam/steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/ and delete the link libstdc++.so.6. Then it should start without problem.

Steam is working fine now without lags or error messages.

Sorry if I posted anything in the wrong place, I am new to this forums as I am to Ubuntu. But I'm getting more and more used to it.

Comments

[Nick Weinberg]

How did you install Steam -- through Ubuntu's software center, or through a package that you downloaded through Steam's website? Either way, please try opening a terminal (alt-ctrl-T), type steam and press enter. Do any error messages appear? What do they say?

[David]

can you provide information on your video card type? go to a terminal and type the command "lspci | grep VGA" without the quotes.

[Nick Weinberg]

Possibly related to askubuntu.com/questions/648966/steam-fails-to-start or askubuntu.com/questions/762666/…