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[Bug 1590154] Re: System slow unless using touchpad


Carl Englund:

1) Please provide the output of the following terminal command (not perform an apport-collect):
sudo dmidecode -s bios-version && sudo dmidecode -s bios-

2) Regarding having to use kernel parameters noapic and nolapic, the
issue of the system slow using the touchpad would be correlated with you
now having to use these parameters to boot since upgrading from Trusty.
Hence, let this report be rescoped why how you have to boot with

3) Could you please advise to what was the last kernel version you were
using that didn't cause this problem?

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  System slow unless using touchpad

Status in linux package in Ubuntu:

Bug description:
  I tested this installing the Disks tool and running a read-only
  benchmark. The transfer rate is very slow (2-3 MB/s) unless I'm moving
  the cursor, then it jumps up.

  As I understand this could have something to do with
  triggering/handling interrupts. In this context it might be relevant
  to know that installing and running Xenial, I now need to have nolapic
  or noapic (or both) for the system to work at all. This is not the
  case with Trusty (also installed on this machine).

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-22-generic 4.4.0-22.40
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
   /dev/snd/controlC0:  diskdoc    1089 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Wed Jun  8 00:07:19 2016
  HibernationDevice: RESUME=UUID=522810df-638a-412b-9aab-791e2e2bc545
  InstallationDate: Installed on 2016-06-07 (0 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: Hewlett-Packard HP Compaq 6715s (RU655ET#AK8)
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=3a37ee65-4c02-4a95-b814-f4538a4a308d ro noapic quiet splash vt.handoff=7
   linux-restricted-modules-4.4.0-22-generic N/A
   linux-backports-modules-4.4.0-22-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/25/2008
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68YTT Ver. F.0E
  dmi.board.name: 30C2
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 71.2D
  dmi.chassis.asset.tag: CNU7201T8J
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68YTTVer.F.0E:bd11/25/2008:svnHewlett-Packard:pnHPCompaq6715s(RU655ET#AK8):pvrF.0E:rvnHewlett-Packard:rn30C2:rvrKBCVersion71.2D:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP Compaq 6715s (RU655ET#AK8)
  dmi.product.version: F.0E
  dmi.sys.vendor: Hewlett-Packard

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