It seems this kernel version causes my Radeon HD 7950 to fail at the login screen -- the monitor has video output until it gets to the login screen. The previous version, 3.13.0-3-generic, which I am currently using, works fine.
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ApportVersion: 2.13.1-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mmstick 2139 F.... pulseaudio
/dev/snd/controlC0: mmstick 2139 F.... pulseaudio
/dev/snd/pcmC0D0p: mmstick 2139 F...m pulseaudio
CurrentDesktop: GNOME
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=0c0d4375-04a3-47aa-b834-784266bab26b
InstallationDate: Installed on 2014-01-17 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140115)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: To be filled by O.E.M. To be filled by O.E.M.
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-3-generic root=UUID=533353cd-e20e-4979-942f-c0b806c157ea ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-3.18-generic 3.13.0-rc8
RelatedPackageVersions:
linux-restricted-modules-3.13.0-3-generic N/A
linux-backports-modules-3.13.0-3-generic N/A
linux-firmware 1.121
RfKill:
Tags: trusty
Uname: Linux 3.13.0-3-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 10/16/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1604
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: SABERTOOTH 990FX
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1604:bd10/16/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnSABERTOOTH990FX:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.
apport information