[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2021-05-17 Thread Bradley Pearce
This issue does not affect me on 21.04 with a clean install.

GeForce GTX 1060

460 tested driver

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-08-20 Thread Bradley Pearce
@optonox, I think you will not get a satisfactory answer to your
questions.

The issues that manifest this behaviour, as I understand it, are
sprawling.  The implementation of highDPI on the platform is quite
naive, and fragmented due to the various packages handling the
rendering, and the various UI libraries used to create the apps.  That's
before we get to driver vendors etc.

I'm just a user, and image processing/computer graphics is my full time
job - I wouldn't know where to start contributing.

It is going to be a long, long road to a decent experience for High DPI
screens and multiple DPI setups.  That's my very unhelpful 2 pennies
worth, hope it helps.

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1881909] Re: Screen tearing with Nvidia Optimus

2020-07-17 Thread Bradley Pearce
This issue effected me also, and I fixed it by following these steps:

http://ubuntuhandbook.org/index.php/2018/07/fix-screen-tearing-
ubuntu-18-04-optimus-laptops/

Does this help for you?

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Title:
  Screen tearing with Nvidia Optimus

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-07-11 Thread Bradley Pearce
@3v1n0 - The updated package works for me.

20.04, GeForce GTX 1060. 440 drivers.

Nice work.

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1558768] Re: gvfsd-trash causing high CPU-load when try to empty trash with thousands of files

2020-07-10 Thread Bradley Pearce
I am on Ubuntu 20.04 with 64GB RAM and Threadripper 32 Core, when
emptying trash, with 32K files (the Flikr 30K dataset), a number of
gvfsd-trash threads are spawned and the Gnome desktop freezes.

To determine it was gvfsd-trash, I switched to another tty, logged in to
console, and killed the process using htop.  This restored desktop
functionality.

I don't know what to look for in the logs, but I can reliably reproduce
the behaviour.

Steps:

1. download the flickr 30K dataset : 
https://www.kaggle.com/hsankesara/flickr-image-dataset
2. Extract and then open the folder containing the files (this will take about 
22s in Nautilus on my workstation, as an aside this operation takes >2s in 
Windows Explorer),
3. Select All (This takes about 9 seconds, as an aside, this operation takes 
>.5 seconds in Windows Explorer).
4. Delete files (This takes a few minutes)
5. Empty trash and watch Gnome Shell and all applications hang like me??

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  gvfsd-trash causing high CPU-load when try to empty trash with
  thousands of files

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-07-08 Thread Bradley Pearce
It would be good to get a steer on what @vanvugt thinks the problem is,
or if there are multiple problems?

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-06-30 Thread Bradley Pearce
@mobilebackup - agreed that there are going to be lots of problems this
workaround will not solve.  It is not yet clear whether any 'weirdness'
is caused by the original bug or the workaround.

With regards to the title bar, I am using the default gnome theme, with
'Larger Text' enabled in universal access.  This seems to work with most
applications; however, in CLion and other Jetbrains IDE's im having to
set the font size to 48 to make it readable, as it does its own
rendering.  Are you using a theme that renders its fonts for example? or
are you using a default theme?

Also, what other wierdness are you experiencing - I am getting lagginess
and jittering - however this is mostly when changing large amounts of
the screen (hense the comment about large rendering areas).

Sorry I'm not of more help, I would like to be, but the rendering stack
is a monolith - I was commenting on past experience of rendering larger
areas and scaling down (it doesn't work very well); that said, I can
currently do work on my configuration.

Apologies for more ramblings, if they are not helpful.

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-06-30 Thread Bradley Pearce
The problems you are experiencing @mobilebackup and @agwin, are most
likely due to the way the workaround works.  Correct me if I am wrong,
but the workaround is asking the graphics system to render a larger
canvas (say 2x, 8K or whatever) and scales this down to the viewport
size.  If an application is not enabled for HiDPI mode, they will be
very squished.  If you don't have sqaure pixels (like most of us), you
will get bad text, and if you don't check for orientation, the viewport
will break.

The reason I said this is a fab workaround, but won't hold for
production, apart from above, is we are asking the card to render a huge
area.  If you move windows around or watch video with GPU decoding, the
card is going to have to move a huge amount of data around.

These are my ramblings, for whatever they are worth.

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-06-28 Thread Bradley Pearce
@TreviƱo

Your ppa work for me in terms of proportional, fractional scaling to
125%.

My configuration is Ubuntu 20.04 x86_64

GeForce GTX 1060

440 tested driver

Log attached - Thank you for your work on this.

Text aliasing is not correct, there is some sub-pixel bulging that
appears like a larger texture area is being rendered and scaled down
incorrectly (perhaps bilinear scaling down to the output resolution).
If this is the case, it is a good workaround, but not suitable for
professional workflows.  If we know roughly what the issue is, I am
happy to test/look at code etc.

Re: my comment about this not getting past test.  If the testers are
using a different driver set, then to say the (prop) drivers are tested
is not really representative; I know a lot of people are donating their
time, and I know we can't test all the configurations - but this is core
functionality.

** Attachment added: "log as requested"
   
https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1870736/+attachment/5387903/+files/log.txt

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-06-25 Thread Bradley Pearce
It would be good to find out how we get HiDPI displays to the testing
team, because this should not have made it past test.

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  [nvidia] Screen scaling 125% gives 200%

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[Bug 1870736] Re: [nvidia] Screen scaling 125% gives 200%

2020-04-27 Thread Bradley Pearce
This effects me also:

GeForce GTX 1060

440 tested driver

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  [nvidia] Screen scaling 125% gives 200%

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