You fixed this on Mac in  issue 178972 , how about Linux?

I have Chrome 31 and this is still a problem on linux. Essentially the same thing as was in Mac, so may be it would make sense to disable ctrl-scroll zoom on linux too?

I can confirm this is still an issue on Windows too https://code.google.com/p/chromium/issues/detail?id=254612

this issue is reproducible and existing in all the channel, 
making as non regression issue.

seeing this on ubuntu 12.10

If this is still happening in Aura, this bug suggests it's an Xorg "feature" misfiring, but switching to smooth scrolling events and doing inertia in the client is the future and avoids this.
https://bugs.freedesktop.org/show_bug.cgi?id=38909

(I don't have a Linux install with a touchpad, so I can't verify if it's been fixed in Aura. It reproduces in a VM on my Mac, but that might be the host OS's inertial scrolling. I asked a friend and he was able to repro on 34, so adding Proj-DesktopAura.)

> 34

(Oops, off-by-one error. Not actually confirmed to still be happening in Aura.)

Still reproducible using my touchpad with the dev channel, FWIW:

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1964.2 Safari/537.36

Ubuntu 13.04

David, thanks for the interesting pointer to the xorg bug, I never noticed that in evince etc.

> David, thanks for the interesting pointer to the xorg bug, I never noticed that in evince etc.

Comment 25 on that bug suggests GTK (GTK3 I assume) uses the new events these days, which might explain why it's not in Evince. I want to say it was in all programs when I saw this bug a few years ago (which is why I knew about this Xorg behavior), but I could be misremembering.

I just verified the same behavior occurs in evince and Firefox 29 and qupzilla (qt-based web browser), so it's a quite persistent and universal issue apparently. Sad face.

On Ubuntu 14.04, this happens on both Chromium 37.0.2062.94/FireFox 32.0.

For the time being, here's a less-than-perfect workaround (ie. completely disable 'coasting'/'flicking'):
http://askubuntu.com/questions/301766/turn-off-trackpad-scroll-momentum

Suggested change:
Effectively ignore/cancel existing flick/scroll events from trackpad/mouse when Ctrl is pressed.

Scenarios:
* Scroll occurring, Ctrl pressed = no zooming
* Ctrl held, scrolling occurs = zooming enabled, user can 'zoom-by-flick'

I can confirm this on Google Chrome 38.0.2125.111 (Official Build 290379), using Ubuntu 14.04.
It also happens when you're in inertia scroll and switch/close tabs using Ctrl+Tab/Ctrl+W.

 Issue 367483  has been merged into this issue.

For a workaround:
1. Install xbindkeys
2. Add these lines to ~/.xbindkeysrc to disable ctrl + scroll:
"/bin/true"
  Control + b:5 + release
"/bin/true"
  Control + b:4 + release

Able to reproduce on Windows and Linux, Chrome 51.0.2704.79. 

The Mac fix  issue 178972  removed this feature, but on Windows and Linux side we should keep this feature and check if Control key was pressed during a scroll.

e.g. In |WebContentsImpl::HandleWheelEvent|, ask |MouseWheelEventQueue| if it's during a scroll 
https://cs.chromium.org/chromium/src/content/browser/web_contents/web_contents_impl.cc?sq=package:chromium&dr=CSs&rcl=1464952570&l=1750

However |MouseWheelEventQueue| doesn't have this information yet, which will be fixed by the scrolling latch issue 526463.

 Issue 606323  has been merged into this issue.

 Issue 254612  has been merged into this issue.

Just to update: this is blocked on a resolution to issue 526463 but that's quite close to shipping so hopefully we can take a look at this in the coming quarter.

Thanks for the update!

Is this a dupe of #6136?

 issue 6136  didn't have a clear reproduce step in description, but this should be a dupe according to reporter's later comment:  issue 6136 #c5.

Merging into this issue as we have clearer reproduce steps and discussion here.

 Issue 6136  has been merged into this issue.

This issue is highly annoying and it affects a large number of users. Please prioritize.

1. https://superuser.com/questions/243127/disable-ctrl-mouse-wheel-zooming-in-chrome
2. https://superuser.com/questions/428712/lock-disable-the-zoom-on-chrome-browser
3. https://askubuntu.com/questions/758560/delayed-touchpad-scroll-event-causes-crazy-zooming-if-top-of-the-page-is-reached
4. https://askubuntu.com/questions/301766/turn-off-trackpad-scroll-momentum

There are even extensions that disable this behavior:

https://chrome.google.com/webstore/detail/no-mousewheel-zoom/ckhlfagjncfmdieecfekjbpnnaekhlhd

Linux workaround: unfortunately the xbindkeys solution from comment #16 no longer works for current Chrome versions. A workaround is to disable inertial scrolling completely at the OS level. For Synaptic touchpads, run this commands:

synclient CoastingSpeed=0

According to #20 this should still be blocked by issue 526463.

Re-assigning to bokan@ as I no long work on this issue.