Desculpa, depois que enviei a mensagem vi que faltavam os dados da máquina, etc. Já tinha feito update e upgrade sem problemas. Não estou conseguindo rodar video, achei que o problema era o Totem, mas VLC também não funcionou.
System: Host: marcia-P25G Kernel: 4.8.0-32-generic i686 (32 bit gcc: 6.2.0)
Desktop: Unity 7.5.0 (Gtk 3.20.9-1ubuntu2) Distro: Ubuntu 16.10
Machine: Mobo: PCCHIPS model: P25G v: 1.0
BIOS: American Megatrends v: 080012 date: 12/28/2005
CPU: Single core Mobile Intel Pentium 4 (-HT-) cache: 1024 KB
flags: (pae sse sse2 sse3) bmips: 6133
clock speeds: max: 3066 MHz 1: 3066 MHz 2: 3066 MHz
Graphics: Card: NVIDIA NV34 [GeForce FX 5200] bus-ID: 01:00.0
Display Server: X.Org 1.18.4 drivers: nouveau (unloaded: fbdev,vesa)
Resolution: 1440x900@59.89hz
GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)
GLX Version: 3.0 Mesa 12.0.3 Direct Rendering: Yes
Audio: Card VIA VT8233/A/8235/8237 AC97 Audio Controller
driver: snd_via82xx port: d000 bus-ID: 00:11.5
Sound: Advanced Linux Sound Architecture v: k4.8.0-32-generic
Network: Card: VIA VT6102/VT6103 [Rhine-II]
driver: via-rhine port: ee00 bus-ID: 00:12.0
IF: enp0s18 state: unknown speed: 100 Mbps duplex: full
mac: 00:16:ec:4c:38:40
Drives: HDD Total Size: 320.1GB (3.6% used)
ID-1: /dev/sda model: WDC_WD3200AAJS size: 320.1GB temp: 43C
Partition: ID-1: / size: 291G used: 8.9G (4%) fs: ext4 dev: /dev/sda1
ID-2: swap-1 size: 2.15GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: None detected - is lm-sensors installed and configured?
Info: Processes: 210 Uptime: 20 min Memory: 743.1/2012.8MB
Init: systemd runlevel: 5 Gcc sys: 6.2.0
Client: Shell (bash 4.3.461) inxi: 2.3.1