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Message #70666
[Bug 1332220] Re: Backport hdmi_portclock_limit regression fix patch to allow forcing overclocking of DVI/HDMI signals
** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty
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https://bugs.launchpad.net/bugs/1332220
Title:
Backport hdmi_portclock_limit regression fix patch to allow forcing
overclocking of DVI/HDMI signals
Status in “linux” package in Ubuntu:
Fix Released
Status in “linux” source package in Trusty:
Fix Committed
Status in “linux” source package in Utopic:
Fix Released
Bug description:
https://bugzilla.kernel.org/show_bug.cgi?id=72961
Summary: a patch included after upstream kernel 3.10 (and for ubuntu,
whatever was used in the live iso) restricted DVI-D single link
connections to 165MHz. Some monitors, which worked before that patch
via an overclocked single link connection stopped working. This patch
lets the user specify modes manually that are higher than 165MHz "at
their own risk".
I've tested the patch in the upstream bug against the current (as of
19 Jun 2014) git trusty kernel tree and everything seems to work fine.
While the patch listed on the above bug won't apply with git-am, it
will apply as patch -p0.
I have it patched on my local branch, and can send a diff if it's
needed.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: jtate 2315 F.... pulseaudio
jtate 2635 F.... pulseaudio
/dev/snd/controlC0: jtate 2315 F.... pulseaudio
jtate 2635 F.... pulseaudio
CurrentDesktop: KDE
Date: Thu Jun 19 13:30:52 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-06-16 (3 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-30-generic root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-30-generic N/A
linux-backports-modules-3.13.0-30-generic N/A
linux-firmware 1.127.2
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/23/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.30
dmi.board.name: Z97 Extreme4
dmi.board.vendor: ASRock
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.:bvrP1.30:bd05/23/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ97Extreme4:rvr: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.
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References