https://bugzilla.kernel.org/show_bug.cgi?id=215890 --- Comment #19 from Satadru Pramanik (satadru@xxxxxxxxx) --- I'm not sure what changed, but it is working on the ubuntu mainline build of 5.18-rc7. The aforementioned patch is not in there. There is a dma-buf patch in 5.18-rc7, but I can't tell if that would make a difference here. The bcm5974 driver is definitely loaded without errors: satadru@mbp113 ~$ lsusb -tv /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M ID 1d6b:0003 Linux Foundation 3.0 root hub |__ Port 4: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M ID 05ac:8406 Apple, Inc. Internal Memory Card Reader /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M ID 1d6b:0002 Linux Foundation 2.0 root hub |__ Port 8: Dev 2, If 0, Class=Hub, Driver=hub/3p, 12M ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) |__ Port 3: Dev 6, If 3, Class=Application Specific Interface, Driver=, 12M ID 05ac:8289 Apple, Inc. Bluetooth Host Controller |__ Port 3: Dev 6, If 1, Class=Wireless, Driver=btusb, 12M ID 05ac:8289 Apple, Inc. Bluetooth Host Controller |__ Port 3: Dev 6, If 2, Class=Vendor Specific Class, Driver=btusb, 12M ID 05ac:8289 Apple, Inc. Bluetooth Host Controller |__ Port 3: Dev 6, If 0, Class=Vendor Specific Class, Driver=btusb, 12M ID 05ac:8289 Apple, Inc. Bluetooth Host Controller |__ Port 12: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M ID 05ac:0262 Apple, Inc. |__ Port 12: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M ID 05ac:0262 Apple, Inc. |__ Port 12: Dev 3, If 2, Class=Human Interface Device, Driver=bcm5974, 12M ID 05ac:0262 Apple, Inc. satadru@mbp113 ~$ modinfo bcm5974 filename: /lib/modules/5.18.0-051800rc7-generic/kernel/drivers/input/mouse/bcm5974.ko license: GPL description: Apple USB BCM5974 multitouch driver author: Henrik Rydberg srcversion: 0BB7AB5EB48AF28F1C4CD31 alias: usb:v05ACp0274d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0273d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0272d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0292d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0291d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0290d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp025Bd*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp025Ad*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0259d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0264d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0263d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0262d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0254d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0253d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0252d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp024Ed*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp024Dd*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp024Cd*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp024Bd*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp024Ad*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0249d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0247d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0246d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0245d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0244d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0243d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0242d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0241d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0240d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp023Fd*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0238d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0237d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0236d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0232d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0231d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0230d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0225d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0224d*dc*dsc*dp*ic03isc*ip02in* alias: usb:v05ACp0223d*dc*dsc*dp*ic03isc*ip02in* depends: retpoline: Y intree: Y name: bcm5974 vermagic: 5.18.0-051800rc7-generic SMP preempt mod_unload modversions sig_id: PKCS#7 signer: Build time autogenerated kernel key sig_key: 16:26:F9:99:B7:74:1B:1E:3D:8C:FA:BD:74:AD:55:7A:E7:0C:0C:4A sig_hashalgo: sha512 signature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parm: debug:Activate debugging output (int) satadru@mbp113 ~$ sudo dmesg | grep bcm5974 [ 6.167200] input: bcm5974 as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.2/input/input9 [ 6.182558] usbcore: registered new interface driver bcm5974 satadru@mbp113 ~$ -- You may reply to this email to add a comment. 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