Platform: Linux x64 GTK2
After the browser has been open for a day or so, the UI will regularly freeze for several seconds at a time. During these freezes, one CPU core will be spiked at 100%, and keystrokes and clicks will be buffered and will be processed once the freeze has completed. Once these freezes begin, they happen so frequently that the browser must be restarted to restore an acceptable user experience. This failure mode seems to happen more frequently on my AMD-based laptop than on my Intel-based desktop machines.
My guess is that it's the JavaScript garbage collector or something similar. Building Pale Moon seems like an involved process, but, if you can point me to a Linux binary that has debugging symbols included, I'll run it through GDB and give you a backtrace of the program state when the freezes happen.
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If you find Pale Moon in any way useful, please consider one or more of the following options to help out:
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Operating the Pale Moon servers, sites, domains, and getting certificates, code signing and more isn't free (or cheap).
Unfortunately there has been a pretty sharp downward trend in what DuckDuckGo's search partnership provides to the project, so now more than ever, we rely heavily on your generous contributions and donations.
If you find Pale Moon in any way useful, please consider one or more of the following options to help out:
- Donating to the project directly through PayPal or Ko-fi.
- Purchasing challenge coins.
- Setting your search engine to the included DuckDuckGo and disabling your ad blocker on the DuckDuckGo domain (so they can show sponsored results).
Doing so will go a long way to make sure we can stay afloat and independent! In addition, Moonchild would still like to pay rent and eat

Pale Moon User Interface Freezes
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This is not for tech support! Please do not post tech support questions in the "Development" board!
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Please keep things on-topic as this forum will be used for reference for Pale Moon development. Expect topics that aren't relevant as such to be moved or deleted.
Please keep everything here strictly on-topic.
This board is meant for Pale Moon source code development related subjects only like code snippets, patches, specific bugs, git, the repositories, etc.
This is not for tech support! Please do not post tech support questions in the "Development" board!
Please make sure not to use this board for support questions. Please post issues with specific websites, extensions, etc. in the relevant boards for those topics.
Please keep things on-topic as this forum will be used for reference for Pale Moon development. Expect topics that aren't relevant as such to be moved or deleted.
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- Apollo supporter
- Posts: 45
- Joined: 2015-12-14, 07:57
- Location: Moon Base Alpha
Re: Pale Moon User Interface Freezes
Yea I notice it only and mainly after visiting github; cpu bounces from 10% to 50% with all tabs closed until browser restart.
voidlinux_x64 glibc-2.36 / Palemoon_latest release (gcc-12.2.0) / GTK2