I have weird errors on console which I havent seen before.

mint17, open source ati driver

[1018/091341:ERROR:renderer_main.cc(227)] Running without renderer sandbox
[1018/091341:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/091341:FATAL:compositor_software_output_device.cc(83)] Check failed: mem.
Generating new string page texture 249: 128x256, total string texture memory is 2,15 MB
Installing breakpad exception handler for appid(steam)/version(1412887979)
Installing breakpad exception handler for appid(steam)/version(1412887979)
[1018/092539:ERROR:renderer_main.cc(227)] Running without renderer sandbox
[1018/092539:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/092539:ERROR:host_shared_bitmap_manager.cc(122)] Cannot create shared memory buffer
[1018/092539:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/092539:FATAL:compositor_software_output_device.cc(83)] Check failed: mem.
ExecSteamURL: "steam://open/downloads"
[1018/092640:ERROR:renderer_main.cc(227)] Running without renderer sandbox
[1018/092640:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/092640:ERROR:host_shared_bitmap_manager.cc(122)] Cannot create shared memory buffer
[1018/092640:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/092640:FATAL:compositor_software_output_device.cc(83)] Check failed: mem.
[1018/093042:ERROR:renderer_main.cc(227)] Running without renderer sandbox
[1018/093042:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/093042:ERROR:host_shared_bitmap_manager.cc(122)] Cannot create shared memory buffer
[1018/093042:WARNING:shared_memory_posix.cc(386)] Shared memory creation failed; out of file descriptors
[1018/093042:FATAL:compositor_software_output_device.cc(83)] Check failed: mem.