Same thing happens here, running 15.04 64bit, Kernel 3.19.0-26-generic
on a ATI (AMD Radeon HD 7800 Series) card. 3.19.0-25-generic runs just
fine. The screen stays black, when SSHing into the machine and reading
syslog, it repeatedly posts these lines:
Aug 18 18:31:52 paul-desktop gdm[1240]:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: fglrx-installer-updates (Ubuntu)
Status: New = Confirmed
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*** This bug is a duplicate of bug 1479913 ***
https://bugs.launchpad.net/bugs/1479913
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1479913, so it is being marked as such. Please