Scrolling takes 18 seconds holding down arrow key at 180% zoom

[robegue]

At 180% zoom (almost full width), with the attached document I count about 18 seconds to scroll from first to second page by holding the arrow-down key.

At 180% zoom, a two-pages text-only document takes less than 2 seconds to scroll from first to second page by holding the arrow-down key.

It becomes faster (not much) when the same image covers a smaller area.

From settings, I've tried to maximize the graphics memory, and to enable/disable hardware acceleration and antialiasing, but it doesn't help.

The problem persists in LibreOffice 4.3.5-rc2 from ubuntu PPA.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libreoffice-writer 1:4.2.7-0ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-29.39~14.04.1-generic 3.16.7-ckt2
Uname: Linux 3.16.0-29-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Dec 22 18:37:43 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-06-03 (202 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CurrentDesktop: KDE
DistroRelease: Ubuntu 14.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-06-03 (591 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
Package: xorg 1:7.7+1ubuntu8.1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 4.2.0-21.25~14.04.1-generic 4.2.6
Tags: trusty
Uname: Linux 4.2.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
_MarkForUpload: True
---
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: kwin
CurrentDesktop: KDE
DistUpgraded: Fresh install
DistroCodename: trusty
DistroRelease: Ubuntu 14.04
DistroVariant: kubuntu
DkmsStatus:
 vboxhost, 5.0.10, 3.19.0-39-generic, x86_64: installed
 vboxhost, 5.0.10, 4.2.0-21-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a26] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:060a]
InstallationDate: Installed on 2014-06-03 (592 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
MachineType: Dell Inc. XPS13 9333
Package: xorg 1:7.7+1ubuntu8.1
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-21-generic root=/dev/sda3 ro quiet nosplash intel_pstate=enable pcie_aspm=force i915.enable_rc6=0 i915.lvds_downclock=0 i915.enable_fbc=0 i915.semaphores=1
ProcVersionSignature: Ubuntu 4.2.0-21.25~14.04.1-generic 4.2.6
Tags: trusty kubuntu
Uname: Linux 4.2.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
_MarkForUpload: True
dmi.bios.date: 03/19/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 099TN4
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA04:bd03/19/2014:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn099TN4:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: XPS13 9333
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.4
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Fri Jan 1 11:41:13 2016
xserver.configfile: None
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 4933
 vendor CMN
xserver.version: 2:1.15.1-0ubuntu2.7

[penalvch (penalvch)]

robegue, thank you for reporting this and helping make Ubuntu better. Could you please both attach the document you are adding an image to, and the image you are adding uncompressed/untarred to this report?

[robegue (r087r70)]

I've made images of a pdf document using gimp. Then added the images to Writer in order to fill the forms.

[Launchpad Janitor (janitor)]

[Expired for libreoffice (Ubuntu) because there has been no activity for 60 days.]

[Mari (mari+ubuntu)]

That problem was introduced with LO 4.0. Older versions work more than ten times faster when scrolling images. The bug is independent from the image type (jpg, tiff, gif, ...), color depth or the program the image was created with. It was reported many times by different users and every time the report was closed without solving the problem. The solution I use is to work with Apache OpenOffice 4.1, which works as fast as expected and shows that it is no problem of slow hardware or image cache settings.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[penalvch (penalvch)]

robegue, in order to define the scope of this, could you please provide precise detail when you say "very slow"?

For example, how much slower is it in scrolling seconds per page, etc.

[robegue (r087r70)]

when I say very slow I mean several seconds to scroll one page. But as I said, the slowiness depends on the size of the image.

[penalvch (penalvch)]

robegue, regarding the attached document, the scroll speed at the same zoom level is exactly the same for me with either Word 2013 on Windows 10 or Ubuntu Wily Writer.

Hence, could you please advise if the one of the PPAs with 5.x shows an improvement via https://launchpad.net/~libreoffice ?

[robegue (r087r70)]

no improvement with libreoffice-5.0.3~rc2-0ubuntu1 from PPA

[penalvch (penalvch)]

robegue, to clarify your comment:
>"...several seconds to scroll one page."

1) How many seconds precisely with the reference document on average?
2) What zoom type/% are you using?
3) Any further dependency to other programs running?

[robegue (r087r70)]

1) at 100% zoom, I count about 5 seconds to scroll from first to second page by holding the arrow-down key
2) at 180% zoom, I count about 18 seconds to scroll from first to second page by holding the arrow-down key
2b) at 180% zoom, a two-pages text-only document takes less than 2 seconds to scroll from first to second page by holding the arrow-down key
3) cpu is not occupied by any other program

[robegue (r087r70)]

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[robegue (r087r70)]

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[robegue (r087r70)]

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[robegue (r087r70)]

You're right Cristopher, sorry. Now it should be ok.

[robegue (r087r70)]

1) $ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
A08
08/31/2015

2) no improvement at all

[penalvch (penalvch)]

robegue, to clarify, if you remove the following non-default kernel parameters does this change anything:
intel_pstate=enable pcie_aspm=force i915.enable_rc6=0 i915.lvds_downclock=0 i915.enable_fbc=0 i915.semaphores=1

[robegue (r087r70)]

Christopher, I've booted up without the non-default kernel parameters but I see no improvement.

thank you,
Roberto

[penalvch (penalvch)]

robegue, in order to test the latest userspace, could you please test http://cdimage.ubuntu.com/daily-live/current/ and advise to the results?

[robegue (r087r70)]

I've tried with xenial-desktop-amd64 live cd, but I get the same slowness, no improvement.

I've also tried to lanuch it through virtualbox, but it doesn't help either.

[penalvch (penalvch)]

robegue, to further root cause, could you please provide the results of the following terminal command:
sudo apt-get -y install lsscsi ; sudo lsscsi -d -L -v

[robegue (r087r70)]

here is the output:

[2:0:0:0] disk ATA LITEONIT LMT-256 10F /dev/sda [8:0]
  device_blocked=0
  iocounterbits=32
  iodone_cnt=0x1be6d
  ioerr_cnt=0x1c
  iorequest_cnt=0x1bf85
  queue_depth=31
  queue_type=none
  scsi_level=6
  state=running
  timeout=30
  type=0
  dir: /sys/bus/scsi/devices/2:0:0:0 [/sys/devices/pci0000:00/0000:00:1f.2/ata3/host2/target2:0:0/2:0:0:0]

[penalvch (penalvch)]

robegue, I'm not convinced we have an actionable issue here that needs to be addressed via scheduling resource now. This is how to have a few seconds in scrolling the attached picture is expected here.

Also, it matches the speed with which Office does the scrolling.

Hence, for now, this is a Won't Fix Wishlist request, focused only on the attached document, pertaining to the underlying algorithms regarding image presentation to be faster, more efficient, etc. which will be addressed over time upstream.

If more information is presented that provides a materially new insight, then this is a different matter, and the Status may be reconsidered.

Despite this, the discussion may still continue regarding this issue.

Thank you for submitting this report, and working together with me on this.

[robegue (r087r70)]

Well, if you think that 18 seconds to scroll a page is normal, you could have closed this earlier without making me flashing bios and installing software. I'm sure there's something wrong in this terrible scrolling lag, not expected even on a cellphone nowadays...

[penalvch (penalvch)]

robegue:
>"Well, if you think that 18 seconds to scroll a page is normal..."

The report summary notes precisely the scope here:
Scrolling takes 5 seconds holding down arrow key at 100% zoom

>", you could have closed..."

This report isn't closed. If it were, then this discussion wouldn't be occurring. However, as previously mentioned, nobody is actively looking into this to pursue a fix.

>"..this earlier without making me flashing bios and installing software."

We ensured that your environment wasn't materially different in a way that causes the results for me to be different from you.

>"I'm sure there's something wrong in this terrible scrolling lag, not expected even on a cellphone nowadays..."

I'm not saying it's pleasant, but what I've been able to reproduce as previously advised is how it's the exact same as Office (which is the bar from a performance compatibility expectation perspective). Present some evidence as to the counter, and we may take it from there.

[robegue (r087r70)]

Can you please try with Microsoft Office at 180% zoom (corresponding to almost full width in my screen)?
Not in Virtualbox or similar, otherwise it's affected by Xorg and all linux evnironment.

Thank you.