I just realized that I'm running an older BIOS version than you. I'm running A20, you're running at least A25. Suspend/resume works perfectly with A20. Version A24 contains a different intel video bios which may be the cause of your problems (some change there triggers this bug).
As a workaround you could downgrade to A20: http://support.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R253064&SystemID=LAT_E6400&servicetag=&os=WLH&osl=en&deviceid=15569&devlib=0&typecnt=0&vercnt=15&catid=-1&impid=-1&formatcnt=0&libid=1&typeid=-1&dateid=-1&formatid=-1&source=-1&fileid=370464 Changelog for the E6400 BIOS: * A24 1. Updated Intel(R) Active Management Technology firmware. 2. Enhanced setting of keyboard repeat rate when docking/undocking. 3. User interface change. Show warning messages to prevent user from clearing TPM when TPM is deactivated. 4. Updated thermal table for E6400 XFR only. Has no impact for E6400. 5. Updated PXE OPTROM. 6. Updated Intel Video BIOS. 7. Enhancement on Serial Over Lan support. 8. Enhanced USB mouse support in BIOS setup. 9. Enhanced the capability between Bluetooth card and NUM-Pad. 10. Updated PSA build 4127. * A25 1. Enhanced HDD password checking. * A26 1. Enhancement on password security support. 2. Added security support for OROM access. 3. Enable External Keyboard LED in Password Screen. 4. Allow option to enter MEBx if ME is not permanently disabled. 5. Added Fn+N hot key to turn on/off LCD backlight for E6400 XFR. 6. Minimize dimmest LCD brightness value for E6400 XFR. -- system freeze before entering suspend https://bugs.launchpad.net/bugs/604252 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
