Problem was that vesafb.c moved from drivers/video to
drivers/video/fbdev which caused the patch no longer to apply. So it was
accidentally dropped at some point between Vivid and now. The Trusty
patch was:
commit 24924c740ea3c5c15a27f391171fad2ca93582a2
Author: Stefan Bader <stefan.ba...@canonical.com>
Date: Tue Apr 21 14:54:52 2015 +0200
UBUNTU: SAUCE: vesafb: Set mtrr:3 (write-combining) as default
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1605662
Title:
Console extremely slow with 4.4 kernels for servers with Matrox
G200er2 or similar
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Xenial:
New
Bug description:
Please see:
https://bugs.launchpad.net/ubuntu/trusty/+source/linux/+bug/1434581
for more information.
The changes that resolved the issue appear to have been lost between
14.04 and 16.04, and I am requesting that write combining (mtrr:3)
once again become the default for vesafb.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-31-generic 4.4.0-31.50
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
AlsaDevices:
total 0
crw-rw----+ 1 root audio 116, 1 Jul 22 09:52 seq
crw-rw----+ 1 root audio 116, 33 Jul 22 09:52 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
Date: Fri Jul 22 10:00:30 2016
HibernationDevice: RESUME=UUID=bf4c73ef-98d2-458f-a284-49af5e7e7e8f
InstallationDate: Installed on 2016-07-22 (0 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: Dell Inc. PowerEdge R320
PciMultimedia:
ProcEnviron:
SHELL=/bin/bash
TERM=linux
PATH=(custom, no user)
LANG=en_US.UTF-8
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic
root=UUID=6faefdcf-a18f-4def-99b1-8a52f5464802 ro
RelatedPackageVersions:
linux-restricted-modules-4.4.0-31-generic N/A
linux-backports-modules-4.4.0-31-generic N/A
linux-firmware 1.157.2
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/10/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.3.3
dmi.board.name: 0R5KP9
dmi.board.vendor: Dell Inc.
dmi.board.version: A09
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr2.3.3:bd07/10/2014:svnDellInc.:pnPowerEdgeR320:pvr:rvnDellInc.:rn0R5KP9:rvrA09:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R320
dmi.sys.vendor: Dell Inc.
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