Public bug reported:
The first restart after Kernel upgrade to 3.19.0-31 this morning, the
computer freezes when showing the graphical login-screen. Num-lock key
is non-responsive, hard reset is required. System is equipped with
Cypress XT [Radeon HD 5870] and runs the open source radeon driver.
Sometimes only a black screen is shown and the system freezes, sometime
the Scroll-lock and Caps-lock keys are blinking (kernel-panik).
Starting the system with kernel version 3.16.0-36, it's rock-solid.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-signed-image-3.19.0-30-generic (not installed)
ProcVersionSignature: Ubuntu 3.16.0-36.48-generic 3.16.7-ckt9
Uname: Linux 3.16.0-36-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct 8 09:28:08 2015
InstallationDate: Installed on 2015-01-28 (252 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug vivid
** Description changed:
The first restart after Kernel upgrade to 3.19.0-31 this morning, the
computer freezes when showing the graphical login-screen. Num-lock key
is non-responsive, hard reset is required. System is equipped with
- Cypress XT [Radeon HD 5870].
+ Cypress XT [Radeon HD 5870] and runs the open source radeon driver.
Sometimes only a black screen is shown and the system freezes, sometime
the Scroll-lock and Caps-lock keys are blinking (kernel-panik).
Starting the system with kernel version 3.16.0-36, it's rock-solid.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-signed-image-3.19.0-30-generic (not installed)
ProcVersionSignature: Ubuntu 3.16.0-36.48-generic 3.16.7-ckt9
Uname: Linux 3.16.0-36-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct 8 09:28:08 2015
InstallationDate: Installed on 2015-01-28 (252 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/1503927
Title:
System Freeze with Kernel 3.19.0 after graphics startup (radeon)
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