My textures were working just the other day, I ran MC Patcher and Minecraft crashed upon starting, so I went unpatch, and all the textures were blank, like grass is pure green and stuff. I thought it was a video card error so I installed a new driver, tried playing, it worked. I then installed Optiplex, and my texture pack, and everything went fine, no texture problems or anything, even with the texture pack. Then tried playing Minecraft today, and the textures were gone again, both with the default texture pack and the new one. I'm so confused, I haven't even changed anything since last night lol.
Should also mention I'm running Linux Mint.