On Sat, Oct 16, 2021 at 7:23 PM Maxim Levitsky <[email protected]> wrote:
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> I recently bought an Aya Neo tablet which now has this wifi chipset in its latest 2021 hardware revision.
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> I am using kernel 5.15.0-rc4 (compiled from source), and I also merged in it and tested the master branch of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-testing.git
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> I tested with and without wireless running before suspend (using gnome's wireless disable option in the gnome's menu).
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> In all cases, the wireless card dies after the resume, which itself takes a lot of time most likely due to timeouts in the resume handler of this driver, and then the system is also partially hung.
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> Looks like the driver's resume (or suspend) function isn't working correctly, and dmesg also indicates several failures.
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> I had attached the full dmesg after a single suspend/resume cycle showing those errors.
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> If I unload the mt7921e prior to suspend and load it after, there are no errors, no timeouts, and wifi connects and works fine after resume.
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> My distro is Fedora 35 beta. Bluetooth also used to fail sometimes after resume when I used older Fedora versions, but now it seems very robust, and doesn't need any disabling, reloading of btusb/etc.
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> I am a kernel developer (I work on KVM these days), and I can test any patches/workarounds/firmware/etc when I find some time for that.
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> Best regards,
> Maxim Levitsky
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(resend using plain text - reminds me to never use Gmail's web interface.)
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