[Bug 219514] New: PC does not resume from suspend, bisect points to btusb/mediatek

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=219514

            Bug ID: 219514
           Summary: PC does not resume from suspend, bisect points to
                    btusb/mediatek
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: h@realh.co.uk
        Regression: No

Created attachment 307246
  --> https://bugzilla.kernel.org/attachment.cgi?id=307246&action=edit
dmesg shortly after booting with the "bad" kernel

In recent kernels my system keeps hanging when trying to resume from suspend.
The fans power up, as do my keyboard LEDs, but the displays stay off and
pressing Caps Lock does not toggle its LED. This means I can't get a log when
the problem occurs.

My motherboard is an MSI MAG X670E TOMAHAWK WIFI with an onboard Mediatek
wireless device, and I'm using Arch Linux.

lspci: 0f:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express
Wireless Network Adapter
lsusb: 0e8d:0616 MediaTek Inc. Wireless_Device

git bisect points to ceac1cb0259de682d78f5c784ef8e0b13022e9d9 as the first bad
commit. It's been difficult to pinpoint it, because the bug isn't 100%
consistent, but this commit has exhibited the bug every time I've tried it, and
subsequent revisions nearly always do. I've tested the previous commit,
6dc22ab9f085ae165e4ce89d61fb426f94e8a969, several times, and it's successfully
resumed every time.

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