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@perex.cz Cc: Takashi Iwai tiwai@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
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