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[Bug 1590154] Re: System slow unless using touchpad


I found a smart way to upgrade the BIOS, so now it's up to date, F.20. I
tested 4.4.0 and 4.7-rc2 again but I'm afraid the results were the same

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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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