Steam will not start on my new Kubuntu 16.10 system. Here is the output of running it from the terminal:
Running Steam on ubuntu 16.10 64-bit
STEAM_RUNTIME is enabled automatically
/bin/bash: /home/[username]/.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(1482202200)
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
Then it just hangs and doesn't start. I Googled the error and tried these methods but none of them worked for me. I have had Steam work in the past, but some new NVIDIA drivers were causing a black screen so I re-installed them with sudo apt-get install nvidia-current, and according to the Driver Manager the legacy drivers are selected (version 304.132 according to Driver Manager, I can't verify fully as nvidia-smi isn't installed). This issue also happens with the open source Nouveau drivers.
The system has a GT 650M Mac Edition GPU with a Core i5-3470S as the CPU.