*** This bug is a duplicate of bug 1637520 ***
https://bugs.launchpad.net/bugs/1637520
Is it really a good idea to mark this well-described bug as a duplicate
of something that just describes a solution?
I find one of the most valuable things we can do to propel the community
forward is to have accurately described bugs so people can get together
and discuss the same issue (even after a fix becomes available). But by
marking this as a duplicate of bug 1637520, that can't happen.
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https://bugs.launchpad.net/bugs/1638278
Title:
4.8 kernel, under heavy load desktop unusable
Status in linux package in Ubuntu:
Confirmed
Bug description:
I've updated from Xenial to Yakkety on my Desktop - Sandybridge
Macbook Pro 8,1
With Xenial, on 4.4 kernel, doing a compile (with ninja for example),
I could use all CPU cores and still have a usable desktop: app
switching was relatively quick, I could (slowly) surf the web while
the compile was happening.
Now with Yakkety 4.8 kernel, doing a compile using all cores totally
seizes up my desktop - app switching is incredibly slow, I see redraw
errors, mouse has poor response.
As a workaround, I have to manually leave a CPU core free when
compiling.
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.8.0-26-generic 4.8.0-26.28
ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
Uname: Linux 4.8.0-26-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0p: gerry 4929 F...m pulseaudio
/dev/snd/controlC0: gerry 4929 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Nov 1 12:02:02 2016
HibernationDevice: RESUME=UUID=2cba34fc-e62e-44c2-904a-1f3f96fbc5eb
InstallationDate: Installed on 2016-05-05 (179 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
MachineType: Apple Inc. MacBookPro8,1
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-26-generic.efi.signed
root=UUID=a9e3a76e-0502-4f4e-a8d9-132fb83f44b1 ro noprompt quiet splash
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.8.0-26-generic N/A
linux-backports-modules-4.8.0-26-generic N/A
linux-firmware 1.161
SourcePackage: linux
UpgradeStatus: Upgraded to zesty on 2016-10-27 (4 days ago)
dmi.bios.date: 10/26/15
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP81.88Z.0047.B2C.1510261540
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-94245B3640C91C81
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro8,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-94245B3640C91C81
dmi.modalias:
dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B2C.1510261540:bd10/26/15:svnAppleInc.:pnMacBookPro8,1:pvr1.0:rvnAppleInc.:rnMac-94245B3640C91C81:rvrMacBookPro8,1:cvnAppleInc.:ct10:cvrMac-94245B3640C91C81:
dmi.product.name: MacBookPro8,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
klp-taint: 12289
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