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Ubuntu: LightDM Black Screen When Using SSD Workaround

Some Ubuntu users are reporting LightDM errors when using a SDD: about half the time when starting the computer, LightDM (the default Ubuntu display manager) doesn’t load correctly and only a black screen and a blinking command line cursor shows up. The issue isn’t limited to those who are using a SSD, but it’s a lot more frequent when booting Ubuntu from a solid-state drive.I too am experiencing this issue with Ubuntu 12.10 (not tested on older Ubuntu versions because I didn’t have a SSD when I was using 12.04) and I’ve found two possible workarounds which have worked for me so I thought I’d share them with you, in case you’re experiencing the same issue.It seems that the black screen with only a blinking cursor (though sometimes I’ve also seen the “System is running in low-graphics mode” error) issue occurs due to a race condition with LightDM and without any tweaks, the only way to load the desktop was to either switch to a tty (CTRL + ALT + F1), login and then restart Lightdm using the “sudo service lightdm restart” command or restart the computer. So here are two possible workarounds:1. Start LightDM with a delayOne way around

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