Comment 39 for bug 254468
Revision history for this message
| TC (tchough) wrote Re: momentary video garbage upon drawing new objects | #39 |
© 2004
Canonical Ltd.
•
Terms of use
•
Data privacy
•
Contact Launchpad Support
•
Blog
•
Careers
•
System status
•
0e1f616
(Get the code!)
I'd just like to point out that this bug is more than a cosmetic issue, it has privacy implications, as well. Anything displayed on screen at any time may be viewed again minutes, hours, or in some cases days later by any user.
Usually, it's just a brief 1 second flash, but in extreme cases when there is lots of I/O activity, the old video memory can be displayed for minutes at a time. The worst case I've seen is probably the default KDE locked screen saver that appears after waking a machine up from suspend mode. The slightly garbled contents of old video memory are displayed for the world to see indefinitely while the screen saver waits for a user to enter a password. An account is not even needed to peek at what was being displayed on screen previously.