On Mon, 11 Oct 2021 17:28:15 +0200, Greg Kroah-Hartman wrote: > > On Sun, Oct 10, 2021 at 10:25:09PM +0200, Takashi Iwai wrote: > > On Sun, 10 Oct 2021 14:22:41 +0200, > > Greg Kroah-Hartman wrote: > > > > > > The Schiit Hel device does not like to respond to all get_ctl_value_v2() > > > requests for some reason. This used to work in older kernels, but now > > > with more strict checking, this failure causes the device to fail to > > > work. > > > > > > Cc: Jaroslav Kysela <perex@xxxxxxxx> > > > Cc: Takashi Iwai <tiwai@xxxxxxxx> > > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > > --- > > > > > > This fixes the Shiit Hel device that I have. It used to work on older > > > kernels (a year ago?), but stopped working for some reason and I didn't > > > take the time to track it down. This change fixes the issue for me, but > > > feels wrong for some reason. At least now I can use the device as a > > > headphone driver, much better than the built-in one for my current > > > machine... > > > > > > If needed, I can take the time to do bisection to track down the real > > > issue here, it might be due to stricter endpoint checking in the USB > > > core, but that feels wrong somehow. > > > > > > Here's the debugfs USB output for this device, showing the endpoints: > > > > > > T: Bus=07 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 5 Spd=480 MxCh= 0 > > > D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 > > > P: Vendor=30be ProdID=0101 Rev=01.02 > > > S: Manufacturer=Schiit Audio > > > S: Product=Schiit Hel > > > C: #Ifs= 4 Cfg#= 1 Atr=c0 MxPwr=0mA > > > I: If#= 0 Alt= 0 #EPs= 1 Cls=01(audio) Sub=01 Prot=20 Driver=snd-usb-audio > > > E: Ad=8f(I) Atr=03(Int.) MxPS= 6 Ivl=1ms > > > I: If#= 1 Alt= 1 #EPs= 2 Cls=01(audio) Sub=02 Prot=20 Driver=snd-usb-audio > > > E: Ad=05(O) Atr=05(Isoc) MxPS= 104 Ivl=125us > > > E: Ad=85(I) Atr=11(Isoc) MxPS= 4 Ivl=1ms > > > I: If#= 2 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=20 Driver=snd-usb-audio > > > E: Ad=88(I) Atr=05(Isoc) MxPS= 156 Ivl=125us > > > I: If#= 3 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid > > > E: Ad=84(I) Atr=03(Int.) MxPS= 16 Ivl=1ms > > > > > > Any other suggestions to fix this are welcome. > > > > Could you show the exact error messages and lsusb -v output? > > We may paper over only the problematic node instead. > > Sure, here's the dmesg output on 5.15-rc5 when it is turned on: > > [Oct11 17:25] usb 7-2.2: new high-speed USB device number 9 using xhci_hcd > [ +0.122422] usb 7-2.2: New USB device found, idVendor=30be, idProduct=0101, bcdDevice= 1.02 > [ +0.000009] usb 7-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > [ +0.000002] usb 7-2.2: Product: Schiit Hel > [ +0.000002] usb 7-2.2: Manufacturer: Schiit Audio > [ +0.327172] input: Schiit Audio Schiit Hel as /devices/pci0000:40/0000:40:01.1/0000:41:00.0/0000:42:08.0/0000:47:00.1/usb7/7-2/7-2.2/7-2.2:1.3/0003:30BE:0101.0009/input/input21 > [ +0.055134] hid-generic 0003:30BE:0101.0009: input,hidraw8: USB HID v1.00 Device [Schiit Audio Schiit Hel] on usb-0000:47:00.1-2.2/input3 > [ +0.135988] usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1 > [ +0.060647] usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1 > [ +0.065362] usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1 > [ +0.192121] usb 7-2.2: cannot get ctl value: req = 0x81, wValue = 0x100, wIndex = 0x1100, type = 1 Thanks. So this happens at the unit 17, and ... > And here is the 'lsusb -v' output of the device. > > > Bus 007 Device 009: ID 30be:0101 Schiit Audio Schiit Hel (snip) > AudioControl Interface Descriptor: > bLength 18 > bDescriptorType 36 > bDescriptorSubtype 6 (FEATURE_UNIT) > bUnitID 17 > bSourceID 5 > bmaControls(0) 0x00000003 > Mute Control (read/write) > bmaControls(1) 0x00000000 > bmaControls(2) 0x00000000 > iFeature 0 ... this is the entry. Could you also post the contents of /proc/asound/card*/usbmixer (only for the corresponding device), too? thanks, Takashi
