** Description changed: Binary package hint: xorg I'm not sure where to report this, I think it affects X worst. OK, I have two laptops here on the table, connected through a LAN. One has up-to-date Edgy, the other up-to-date Feisty. The Feisty one (which is where the bug occurs) has a Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (as reported by hal-device-manager). On the Feisty I log in (normal Gnome session), I start a terminal, and I ssh to the other one, forwarding X: "ssh -X [EMAIL PROTECTED]" I authenticate myself, and I get a ssh shell to the Edgy machine. I can run pretty much anything now, and it displays correctly on the Feisty display. However, if I run glxgears on the Edgy machine, I have two issues: First (and not very grave), it complains about DRI not working (normal, I suppose), then it starts running in indirect mode; the window is correctly displayed on the Feisty screen, but the animation is very choppy (on the order of 1fps). However, glxgears reports running at ~1000fps (+/-200). I was under the impression that it should look quite well, too. Second -- and this is the problem -- if I kill the first glxgears (ctrl-c) and I run another one again, the X server (on Feisty) displays a window without any contents (just black), freezes for a bit, and then either freezes completely or crashes. (Actually, it restarts; I assume it's because it crashes.) I've done this three times in a row; the first two times X restarted, the last time it just froze and I rebooted after a while. The Edgy machine kept running normally --- I didn't have to restart it when the Feisty X crashed. I can do this again and gather whatever debug information you might need, I'm waiting for instructions. I have a bit of a vague idea of how X works, but I really don't know where to start diagnosing this issue. + + I don't know if I should mark this as a security vulnerability. It needs + a log-in on both machines. It does allow a normal user to crash the X + server, so it might be usable as a sort of denial-of-service against + other users, but then again, I'm not sure that's that hard to do.
-- opengl over remote X (over ssh) crashes X https://launchpad.net/bugs/83339 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
