kernel-packages team mailing list archive

[Mike Jester <mike@xxxxxxxxx>]

Public bug reported:

When I first came across this issue I thought it was the same as bug
#1316035 (https://bugs.launchpad.net/ubuntu/+source/xorg-
server/+bug/1316035), but this bug seems to be about X and it is
reporting xorg-server as the package with the issue. I've seen a report
on the certification program already on this, but it was lacking follow-
up and suggested a bug report, question 255332
(https://answers.launchpad.net/ubuntu-certification/+question/255332).
I've already asked about this on the forums, and received no replies.

I originally encountered this issue due to having a bunch of Dell
servers that I was testing with kernel 3.13 on 12.04. The text console
is so slow that it is unusable when using vi or doing an operation
similar to dpkg -l |grep xorg. Comparing the exact same system with
kernel 3.2 or 3.11 loaded and running lsmod, vesafb is listed and
performance is excellent. It is not listed on the 3.13 system. The same
issue exists on 14.04 with the 3.13 or 3.16 kernel.

Attempting to do modprobe vesa or modprobe vesafb returns modprobe:
FATAL: Module vesa not found and modprobe: FATAL: Module vesafb not
found respectively.

Attempting to use uvesafb on this hardware results in a black screen.
Attempting to use vga16fb results in good performance, but I am locked
to 640x480. I tried to use fbset to force higher resolutions, but it
either results in a distorted display or tells me there is not enough
memory.

I need a 1280x1024 console with performance equal to 12.04 with kernels
3.2-3.11. The server I'm using for testing is a Dell R320.

This appears to be regression as I can duplicate it by simply doing a
fresh install of 12.04.1 and not having the issue, while doing a fresh
install of 12.04.5, 14.04.1, or 14.04.2 results in a very slow console.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Package changed: xorg-server (Ubuntu) => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1434581

Title:
  Console extremely slow with 3.13 and newer kernels for certified
  servers with Matrox G200er2 or similar

Status in linux package in Ubuntu:
  New

Bug description:
  When I first came across this issue I thought it was the same as bug
  #1316035 (https://bugs.launchpad.net/ubuntu/+source/xorg-
  server/+bug/1316035), but this bug seems to be about X and it is
  reporting xorg-server as the package with the issue. I've seen a
  report on the certification program already on this, but it was
  lacking follow-up and suggested a bug report, question 255332
  (https://answers.launchpad.net/ubuntu-certification/+question/255332).
  I've already asked about this on the forums, and received no replies.

  I originally encountered this issue due to having a bunch of Dell
  servers that I was testing with kernel 3.13 on 12.04. The text console
  is so slow that it is unusable when using vi or doing an operation
  similar to dpkg -l |grep xorg. Comparing the exact same system with
  kernel 3.2 or 3.11 loaded and running lsmod, vesafb is listed and
  performance is excellent. It is not listed on the 3.13 system. The
  same issue exists on 14.04 with the 3.13 or 3.16 kernel.

  Attempting to do modprobe vesa or modprobe vesafb returns modprobe:
  FATAL: Module vesa not found and modprobe: FATAL: Module vesafb not
  found respectively.

  Attempting to use uvesafb on this hardware results in a black screen.
  Attempting to use vga16fb results in good performance, but I am locked
  to 640x480. I tried to use fbset to force higher resolutions, but it
  either results in a distorted display or tells me there is not enough
  memory.

  I need a 1280x1024 console with performance equal to 12.04 with
  kernels 3.2-3.11. The server I'm using for testing is a Dell R320.

  This appears to be regression as I can duplicate it by simply doing a
  fresh install of 12.04.1 and not having the issue, while doing a fresh
  install of 12.04.5, 14.04.1, or 14.04.2 results in a very slow
  console.

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