Mouse scrolling is broken #17254

melroy89 · 2021-11-15T22:30:49Z

Steps to reproduce

Open any chat
Try to use your scroll-wheel, to scroll up or down

Expected behaviour

Scrolling within the message window.

Actual behaviour

Telegram desktop doesn't respond to any scroll wheel action.

Operating system

Linux Mint 20.2 (Ubuntu based)

Version of Telegram Desktop

3.2.4

Installation source

Static binary from official website

Logs

No response

ilya-fedin · 2021-11-15T23:51:34Z

Open any chat

Try to use your scroll-wheel, to scroll up or down

Works like a charm. Looks like these steps aren't right.

melroy89 · 2021-11-16T00:10:00Z

Hmm.. restarting Telegram fixed the problem. I could still type messages.

Is there some kind of crash report or logging file I could refer to?

EDIT: I found /home/<user>/.local/share/TelegramDesktop/log.txt file..

melroy89 · 2021-11-16T00:11:54Z

The log file (log.txt) gets overridden.. Maybe you should store at least the current log AND ALSO the previous log file.

ilya-fedin · 2021-11-16T00:18:10Z

Nothing regarding scrolling is logging, it's something handled at toolkit level, not at app level

jprando · 2021-11-16T02:56:00Z

happened here with me too.

what I noticed is that the problem is intermittent, when the scroll does not work, I noticed that the mouse icon is different when it is over the application, and when the mouse icon is not different (from other apps) the scroll works in desktop telegram

I'm using the binary version available here on github in release v3.2.4
Pop!_OS 21.04 x64
Gnome 3.38.5
X11

ilya-fedin · 2021-11-16T02:58:57Z

Without a reliable way to reproduce, it's unlikely to be fixed

jprando · 2021-11-16T03:48:31Z

Without a reliable way to reproduce, it's unlikely to be fixed

yes, i'll keep an eye out here and if i can find a way to reproduce it, i'll share it here 😉

melroy89 · 2021-11-16T14:00:18Z

@ilya-fedin yes, you could also think along how to debug this issue better.

ilya-fedin · 2021-11-16T14:02:09Z

@Danger89 I don't imagine how this could happen and how to debug this, tdesktop just reacts to mouse events sent by Qt. I have a feel this is a Qt bug.

AndreyKopeyko · 2021-11-17T07:28:17Z

I have the same problem running 3.2.2 and 3.2.5 versions.

version 3.2.5 works for while after start, but some moment later wheel scroll becomes broken.

AndreyKopeyko · 2021-11-17T07:31:08Z

@Danger89 I don't imagine how this could happen and how to debug this, tdesktop just reacts to mouse events sent by Qt. I have a feel this is a Qt bug.

It should happened in 3.1.8 version also if it was a Qt bag. But 3.1.8 scrolls nicely.
No update of Gt libs on my laptop happened.

ilya-fedin · 2021-11-17T07:32:21Z

Qt was updated in 3.2.0

AndreyKopeyko · 2021-11-17T09:07:53Z

Without a reliable way to reproduce, it's unlikely to be fixed

How to reproduce:

install & start telegram desktop 3.2.5 - wheel scroll will work
put your note asleep - just close the lid
after awake - wheel scroll fails ;-(

Ubuntu 20.04.3 LTS
libqt5gui5:amd64 5.12.8+dfsg-0ubuntu1

ilya-fedin · 2021-11-17T09:11:11Z

libqt5gui5:amd64 5.12.8+dfsg-0ubuntu1

tdesktop doesn't use your system Qt, it has Qt 6.2 embedded in the binary

ilya-fedin · 2021-11-17T09:12:36Z

put your note asleep - just close the lid

Can you be more specific - you mean suspend or hibernation? I don't have any action assigned to the lid.

AndreyKopeyko · 2021-11-17T09:15:12Z

put your note asleep - just close the lid

Can you be more specific - you mean suspend or hibernation? I don't have any action assigned to the lid.

suspend. No hibernation.

ilya-fedin · 2021-11-17T09:16:06Z

suspend. No hibernation.

Sorry, but I can't reproduce :(
Works like a charm after suspend on my hardware.

melroy89 · 2021-11-17T10:41:11Z

Qt was updated in 3.2.0

This could be why..

Maybe build a debug app (if possible, so we can catch any eerros)? Or did you see anything strange in the telegram desktop log.txt?

AndreyKopeyko · 2021-11-17T16:55:26Z

suspend. No hibernation.

Sorry, but I can't reproduce :( Works like a charm after suspend on my hardware.

Sorry indeed.
How can I get additional info for you? Does desktop write some logs I can send you back?

ilya-fedin · 2021-11-17T20:42:40Z

Maybe build a debug app (if possible, so we can catch any eerros)? Or did you see anything strange in the telegram desktop log.txt?

I don't imagine how a debug build would help, this is not a crash, so debug symbols won't help. log.txt won't help either since, as I said previously, nothing regarding scrolling is logged.

How can I get additional info for you?

I don't know :(. If this is a Qt bug, only Qt developers know how to debug this...

melroy89 · 2021-11-17T23:04:22Z

yea I could find some debugging techniques within the Qt docs:
https://doc.qt.io/qt-5/debug.html

Just maybe QT_DEBUG_PLUGINS=1 environment variable could help... Maybe..

ilya-fedin · 2021-11-17T23:19:38Z

All QT_DEBUG_PLUGINS=1 does is outputs debug info about plugins loading

ilya-fedin · 2021-11-17T23:21:29Z

maybe QT_LOGGING_RULES='*.debug=true' would help, I'm not sure...

AndreyKopeyko · 2021-11-18T10:07:44Z

suspend. No hibernation.

Sorry, but I can't reproduce :( Works like a charm after suspend on my hardware.

It solidly happens if notebook was suspended for about 1 hour - the way from home to office.

AndreyKopeyko · 2021-11-18T10:12:14Z

QT_LOGGING_RULES='*.debug=true'

It produces a lot of output. Hope my SSD is enough to accommodate all of them until scroll freezes...

AndreyKopeyko · 2021-11-18T21:34:19Z

maybe QT_LOGGING_RULES='*.debug=true' would help, I'm not sure...

Pls take a look in the log - https://dev.kopeyko.ru/tmp/telegram-v3.2.5.debug20211119.output

I started telegram as

kaa@MRGnb2:~/tmp$ QT_LOGGING_RULES='*.debug=true' telegram 2>&1 |tee telegram-v3.2.5.debug20211119.output

All day it work great, but finally wheel scrolling got frozen - after note spend about 45 minutes in suspend mode (the way from office to home) :-(

Hope it'll help you to investigate the problem.

ilya-fedin · 2021-11-18T21:52:05Z

Pls take a look in the log - https://dev.kopeyko.ru/tmp/telegram-v3.2.5.debug20211119.output

I see input device re-detection at line 87810 and no scroll wheel events logged since then. I don't know when it happened though since the log has no timestamps.

AndreyKopeyko · 2021-11-18T22:20:12Z

Pls take a look in the log - https://dev.kopeyko.ru/tmp/telegram-v3.2.5.debug20211119.output

I see input device re-detection at line 87810 and no scroll wheel events logged since then. I don't know when it happened though since the log has no timestamps.

How I can enable timestamps?

ilya-fedin · 2021-11-18T22:27:09Z

looks like QT_MESSAGE_PATTERN="[%{time}] %{if-category}%{category}: %{endif}%{message}"

ilya-fedin · 2022-07-29T05:22:55Z

Given that Qt's X11 support degrades and it seems they have no people with enough knowledge to fix bugs like this one or #10348 on X11, we're trying to remove GNOME from blacklist for operating with Wayland backend again (it's the only blacklisted environment). Last time we tried that, there were a lot of reports about regressions as migrating from X11 backend to Wayland backend with Qt is basically exchanging one bugs with the others as both backends have various user-noticable bugs. So, this time we're trying to make Wayland the default only for new installations, so these bugs appear as result of manual intervention (like installing the application on new system installation, switching from X11 session to Wayland or clearing application data) rather than a regression after automatic update.

So, if you're using any Wayland-capable environment (like Ubuntu 22.04 with non-NVIDIA hardware) and you aren't afraid of exchanging the current bugs with some other ones, you can update to beta version 4.0.3 and clear application data or remove nowayland file from tdata directory in application data directory (you can open it with the viewlogs cheat code).

DrjavaB · 2022-08-06T15:34:53Z

telegram desktop
v 4.0.2
OS: ubuntu 20.04 lts
telegram desktop mouse scroll not working! neither in groups nor in the settings menu

ilya-fedin · 2022-08-06T16:08:54Z

Ok, apparently the thread should be locked again to avoid noise

ilya-fedin · 2022-08-06T16:09:49Z

Everyone who want the fix right now: feel free to switch to Wayland and follow what is described in #17254 (comment)

ilya-fedin · 2023-03-21T20:12:15Z

Good news, looks like Qt is going to have a fix for this in the release 6.5.0 version (currently the static binary is using 6.5.0-beta3).

eyalroz · 2023-03-21T22:58:02Z

@ilya-fedin : Don't you mean 6.6.0? That's what it says on the Qt bug page. A fix has just been checked into the trunk there.

ilya-fedin · 2023-03-21T22:59:52Z

The cherry-picks aren't merged yet, but the 6.5.0 one already failed, so it may be that it will be only in 6.5.1 (unless they will re-stage it tomorrow)

ilya-fedin · 2023-03-22T09:27:54Z

https://codereview.qt-project.org/c/qt/qtbase/+/468037

ezaton · 2023-03-23T06:59:57Z

I can add that the trigger on my computer is disconnecting and reconnecting the mouse several times. Scrolling does work on other applications correctly, however - not for Telegram.
I use KVM to connect multiple systems to the same keyboard/mouse, so after switching several times, this happens.
Maybe it will help in reproduction.

ilya-fedin · 2023-03-23T10:54:39Z

Aokromes · 2023-04-22T18:07:21Z

fixed on 4.8.0

nogurenn · 2023-04-25T08:38:22Z

@Aokromes @ilya-fedin petition to reopen this issue? I think I found a lead.

The broken scrolling is reproducible using the Snap / sandboxed build, v4.8.1 (Ubuntu Desktop).
The Telegram Desktop app closes as soon as the mouse wheel scroll is triggered while the app is on the foreground. Manually dragging the scrollbars works and does not close the app.

No issue when installing "directly"

tar -xf tsetup.4.8.1.tar.xz 
sudo mv Telegram /opt/telegram
sudo ln -sf /opt/telegram/Telegram /usr/bin/telegram

ilya-fedin · 2023-04-25T13:49:22Z

@nogurenn this issue is not about closing when scrolling, it's about scrolling just not working. I.e. you scroll and nothing happens.

melroy89 added the bug label Nov 15, 2021

telegramdesktop locked as too heated and limited conversation to collaborators Apr 7, 2022

dvalter mentioned this issue Apr 25, 2022

[Question] Qt5 support and Linux #24427

Closed

ilya-fedin mentioned this issue Jun 10, 2022

Scroll doesn't work #24593

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Issues needing community help on reports to third-party projects #25126

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Mouse scrolling fails after reconnect monitor and mouse with switcher #26026

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ilya-fedin mentioned this issue Mar 31, 2023

Add fixes for window moving and scrolling on X11 desktop-app/patches#137

Merged

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github-actions bot locked as resolved and limited conversation to collaborators Jun 10, 2023

Mouse scrolling is broken #17254

Mouse scrolling is broken #17254

Comments

melroy89 commented Nov 15, 2021

Steps to reproduce

Expected behaviour

Actual behaviour

Operating system

Version of Telegram Desktop

Installation source

Logs

ilya-fedin commented Nov 15, 2021

melroy89 commented Nov 16, 2021 • edited

melroy89 commented Nov 16, 2021 • edited

ilya-fedin commented Nov 16, 2021

jprando commented Nov 16, 2021

ilya-fedin commented Nov 16, 2021

jprando commented Nov 16, 2021

melroy89 commented Nov 16, 2021

ilya-fedin commented Nov 16, 2021

AndreyKopeyko commented Nov 17, 2021 • edited

AndreyKopeyko commented Nov 17, 2021 • edited

ilya-fedin commented Nov 17, 2021

AndreyKopeyko commented Nov 17, 2021 • edited

ilya-fedin commented Nov 17, 2021

ilya-fedin commented Nov 17, 2021 • edited

AndreyKopeyko commented Nov 17, 2021

ilya-fedin commented Nov 17, 2021

melroy89 commented Nov 17, 2021

AndreyKopeyko commented Nov 17, 2021

ilya-fedin commented Nov 17, 2021

melroy89 commented Nov 17, 2021

ilya-fedin commented Nov 17, 2021 • edited

ilya-fedin commented Nov 17, 2021

AndreyKopeyko commented Nov 18, 2021

AndreyKopeyko commented Nov 18, 2021

AndreyKopeyko commented Nov 18, 2021

ilya-fedin commented Nov 18, 2021

AndreyKopeyko commented Nov 18, 2021

ilya-fedin commented Nov 18, 2021

ilya-fedin commented Jul 29, 2022 • edited

DrjavaB commented Aug 6, 2022

ilya-fedin commented Aug 6, 2022

ilya-fedin commented Aug 6, 2022

ilya-fedin commented Mar 21, 2023

eyalroz commented Mar 21, 2023

ilya-fedin commented Mar 21, 2023

ilya-fedin commented Mar 22, 2023

ezaton commented Mar 23, 2023

ilya-fedin commented Mar 23, 2023

Aokromes commented Apr 22, 2023

nogurenn commented Apr 25, 2023 • edited

ilya-fedin commented Apr 25, 2023

melroy89 commented Nov 16, 2021 •

edited

melroy89 commented Nov 16, 2021 •

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AndreyKopeyko commented Nov 17, 2021 •

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AndreyKopeyko commented Nov 17, 2021 •

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AndreyKopeyko commented Nov 17, 2021 •

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ilya-fedin commented Nov 17, 2021 •

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ilya-fedin commented Nov 17, 2021 •

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ilya-fedin commented Jul 29, 2022 •

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nogurenn commented Apr 25, 2023 •

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