Scrolling in Linux/Ubuntu is either too slow or too fast

Discussion in 'Linux Virtual Machine' started by BryanSmith, Jan 1, 2023.

  1. BenjaminP7

    BenjaminP7 Bit poster

    Hey, I am experiencing the same problem. Is there a solution yet?
    Rob18 likes this.
  2. Mikhail Ushakov

    Mikhail Ushakov Parallels Team

    hi @BenjaminP7 ,
    Would you share the reproduction steps with us, please?
    Additionally, for us to investigate the issue better, kindly try performing the steps below:
    1. Reproduce the issue again.
    2. Collect a technical report while the issue is being reproduced (click Parallels icon > Help > Send technical data > check "Attach screenshots..." > press Send Report) and send the report's 9-digit ID in your reply to this post.
  3. BenjaminP7

    BenjaminP7 Bit poster

    Hello @Mikhail Ushakov,

    thanks for your response.

    I'll try my best to describe my scenario:

    I am using a M1 MacBook Air running Sonoma 14.0 with a Parallels Desktop for Mac Pro License. After installation, I chose Debian GNU/Linux from the offered options, which installed nicely, boots fast etc.

    Using the TouchPad of my MacBook Air, I notice that when scrolling in a program (doesn't matter which), let's say "Software" app, or any browser, File Explorer, anything that lets you scroll through content, the movement is translated to a very fast scroll speed. A little motion results in a wide scroll distance.
    Reading the attempts of the pre-posters in this thread, I would just like to know: What would be the easiest way to decrease the scroll speed without affecting cursor speed?

    Thanks in advance
  4. Adeboye Adeotan

    Adeboye Adeotan Staff Member

    Hello Benjamin,

    Kindly perform the following steps.

    1. Shut down the Virtual Machine. Make sure that the virtual machine is shut down. If it is in a suspended state, please run it and then shut it down (Actions > Shut Down).

    2. Locate your virtual machine (

    3. Open your Virtual Machine by right-clicking on it and choosing Show Package Content.

    4. Find and open config.pvs file by right click and choose Open With -> TextEdit

    5. Then you need to find this:
    <SmoothScrolling dyn_lists="">

    and switch from 0 to 1.

    6. Restart Parallels Desktop.

    7. Check if the issue persists.

    In case the issue persists, please collect a technical report (click the Parallels icon > Help > Send technical data > check "Attach screenshots..." > press Send Report) and send the report's 9-digit ID in a reply.
  5. BenjaminP7

    BenjaminP7 Bit poster

    Hello @Adeboye Adeotan,
    thanks for your reply.
    I followed your steps and it indeed changed the scrolling behavior in Linux. Unfortunately, it takes away a lot of precision and doesn't feel very accurate anymore. Movements are getting buffered and I wonder if there are any alternatives to this solution?

    To rephrase my request: This solution seems to do more than just decrease the scroll speed. Is there are way to achieve this?
  6. Maxim Rasulov

    Maxim Rasulov Staff Member

    Hello Benjamin,

    Could you please share the technical report after reproduction with us, so we could investigate: collect a technical report (click the Parallels icon > Help > Send technical data > check "Attach screenshots..." > press Send Report) and send the report's 9-digit ID in a reply message.

    And to comment on your question, unfortunately, at present this setting is the only possibility to modify the scrolling behavior in Linux VM's, but if the modified behavior is more detrimental to your experience, you can reverse the change by switching the SmoothScrolling back to the original value, while the issue is being looked into, pending a report ID from your side.

    Thank you!
  7. BenjaminP7

    BenjaminP7 Bit poster

    Hello Maxim,
    thanks for the response.
    I just sent the report and received the ID: 442066145.
  8. Dmitry@Parallels

    Dmitry@Parallels Parallels Team

    Hey @BryanSmith, @SkylerT, @sfgvieira, @MarcinK7, @BenjaminP7, better late than never, we are currently investigating the situation with the scrolling experience in Linux VMs and hoping to improve it in future product updates. Stay tuned for updates, and wish you happy holidays ahead.
    Zshrc and BenjaminP7 like this.
  9. SkylerT

    SkylerT Bit poster

    Hey @Dmitry@Parallels - thanks for the update. I do hope this is an early 2024 item as it is the primary reason I unsubscribed on my primary laptop and am going to let my secondary laptop sub lapse as well when it is up. Please post back here when this is resolved.
    Dmitry@Parallels likes this.
  10. Zshrc

    Zshrc Member

    Honestly the only quirk that makes Linux VMs feel like a second-class citizen, otherwise Parallels works great with Linux. Hope this can be resolved soon.
    Dmitry@Parallels likes this.

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