Re: [gentoo-user] Some symbols render incomplete in text mode

[gevisz]

вс, 1 мая 2022 г. в 13:58, Michael <confabulate@××××××××.com>:
>
> On Saturday, 30 April 2022 12:49:59 BST gevisz wrote:
> > пт, 29 апр. 2022 г. в 00:42, Frank Steinmetzger <Warp_7@×××.de>:
> > > Am Thu, Apr 28, 2022 at 09:20:08PM +0300 schrieb gevisz:
> > > > ср, 27 апр. 2022 г. в 13:55, Frank Steinmetzger <Warp_7@×××.de>:
> > > > > Am Sun, Apr 24, 2022 at 11:57:49PM +0300 schrieb gevisz:
> > > > > > After a recent update of my Gentoo system, I have noticed that some
> > > > > > symbols may be rendered incomplete in a text mode.
> > > > >
> > > > > What exactly do you mean with “text mode”?
> > > >
> > > > By "text mode" I mean that "it happened in Gvim, in a web-browser
> > > > and in a dialog-window for saving files" but not in videos or pictures.
> > >
> > > I see, you mean text that was actually rendered and not part of an image.
> >
> > Yes. Thank you for replying to this thread once more.
> >
> > Yesterday evening I finally managed to catch the problem
> > with incomplete rendering of cyrillic letters "in text mode"
> > and make a screenshot of it. This time, it happened in
> > html page that was open in google-chrome.
> >
> > A properly cropped screenshot of it is attached to this email.
> >
> > As it may happen that you and other readers of this thread
> > are not familiar with cyrillic letters to the extent needed to see
> > that they are rendered incomplete, I also add a screenshot
> > of the same text rendered complete. I made it this morning
> > with the same google-chrome.
> >
> > By the way, this means that the problem appears from time
> > to time and does not look to be easily reproducible.
> >
> > I even assume that it may be a hardware problem
> > as my computer is quite old, but unfortunately
> > can not check this assumption so far.
> >
> > > I noticed that those applications you mention are all GTK-based.
> >
> > Yes, I try not to mix GTK and Qt on this old computer
> > as much as possible to reduce the time needed
> > to update the system. So, most of the applications on
> > it use GTK. The only one that I know uses Qt is VLC
> > as it does not work properly with GTK. However, I use
> > it quite rarely.
> >
> > > Do you have any available that are built on Qt (or any other toolkit)?
> >
> > I am afraid that VLC is the only one.
> > Once tried Qutebrowser was removed a long time ago.
> >
> > > I can’t say that I have seen that youtube issue before. But I also have no
> > > idea what it could be or how to solve it. Could you create a new browser
> > > profile and check whether the issue is still present there? This could
> > > tell
> > > us whether it’s an issue with your existing profile.
> >
> > I will try to create a new user and run google-chrome from his profile
> > and report the result here.
> >
> > However, when the disk with my /home directory
> > was for a few months installed on another computer
> > also runned by Gentoo with similar configuration
> > I have not noticed such problems.
> >
> > Moreover, I am starting to suspect that
> > the problem with incomplete rendering letters
> > "in text mode" and the problem with symbols
> > in the youtube video player toolbar may be
> > separate ones as the latter is much more
> > reproducible and appears only in google-chrome
> > (have not noticed it in Firefox, for example,
> > though I quite rarely use Firefox to view youtube videos).
>
> I can't offer much help on this, but I'll share a similar experience.  I have
> seen something like this happening on Chromium, running on Enlightenment
> desktop a few years ago.  I recall it was affected by the scale set on the
> desktop 1.2:1 or something like that.  I can't recall if this was also
> occurring on Plasma.  I think I saw the same missing character problem on the
> title bar of the browser window.  This was on English text (UTF8 encoding).
> Firefox and other applications didn't have a problem.  At that time I recall
> Chromium's rendering of the menu/toolbar and window border was fighting against
> the desktop.  Some update on Chromium eventually fixed things.  So I blamed it
> on the interplay between the desktop, browser and graphics card/driver
> (radeon).

Thank you for your input. My graphic card is also Radeon,
namely, built-in ATI Radeon X1250, and I use Awesome WM.
The problem appears mostly in google-chrome, but I saw it
also in Gvim, and currently it appeared also in the taskbar.
A properly cropped screenshot is attached to this message.