I'm already using proposed, so I just reloaded the software list and installed
the new kernel 3.5.0-16.24 which it offered.
On reboot though, it sadly exhibited the same black screen bug as before with
.23, no change there.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Description changed:
After selecting an entry from the Grub menu and booting starts, the screen
goes blank, and the monitor displays "no signal". When booting ends and X
starts up, the screen comes back to life, and the LightDM login screen appears.
I'm using a Radeon HD 6850 with the opensource driver.
Kernel version: 3.5.0-15.23-generic 3.5.4
This is a regression, as the issue wasn't present with an earlier 3.5
kernel (.15). When I updated recently, I updated to kernel version .22,
which exposed the issue. Updating to a newer version (.23) did nothing
to fix the issue.
+ Update: Installing the new kernel 3.5.0-16.24 did not fix the issue
+ either.
+
This bug may be related to the following bug: (although that bug appeared
with Intel graphics hardware)
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1053269
ProblemType: Bug
DistroRelease: Ubuntu 12.10
- Package: linux-image-3.5.0-15-generic 3.5.0-15.23
+ Package: linux-image-3.5.0-15-generic 3.5.0-15.22 / 3.5.0-15.23 / 3.5.0-16.24
ProcVersionSignature: Ubuntu 3.5.0-15.23-generic 3.5.4
Uname: Linux 3.5.0-15-generic x86_64
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
Date: Thu Sep 27 15:25:08 2012
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120913)
ProcFB: 0 radeondrmfb
SourcePackage: linux
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https://bugs.launchpad.net/bugs/1057532
Title:
Monitor goes black ("no signal") after Grub, comes back to life when X
starts
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