[BUG] NVIDIA v495.29.05 driver spamming dbus-enabled applications with invalid messages

Graphics / Linux Linux
9

The solution provided by @MaxX2342 works (thanks!) but you can also use the dbus-test-tool to black-hole all messages. This utility is provided directly by freedesktop. Here is my preferred workaround:

/etc/dbus-1/system.d/nvidia-fake-powerd.conf (renamed to be more expressive and configured to run as the dbus user)

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
        <policy user="dbus">
                <allow own="nvidia.powerd.server"/>
        </policy>
        <policy context="default">
                <allow send_destination="nvidia.powerd.server"/>
                <allow receive_sender="nvidia.powerd.server"/>
        </policy>
</busconfig>

The simple systemd service /etc/systemd/system/nvidia-fake-powerd.service:

[Unit]
Description=NVIDIA fake powerd service

[Service]
Type=dbus
BusName=nvidia.powerd.server
ExecStart=/usr/bin/dbus-test-tool black-hole --system --name=nvidia.powerd.server
User=dbus
Group=dbus
LimitNPROC=2
ProtectHome=true
ProtectSystem=full

[Install]
WantedBy=default.target
Alias=dbus-nvidia.fake-powerd.service

Of course once these files are in place, systemd must be reloaded and the service enabled/started:

systemctl daemon-reload
systemctl enable nvidia-fake-powerd.service
systemctl start nvidia-fake-powerd.service
systemctl status nvidia-fake-powerd.service
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