On 07. 03. 24 20:34, Alan Stern wrote:
Another thing the traces showed is that the device doesn't like the "new" initialization scheme; it wants the "old" one. You can test this by setting the old_scheme_first module parameter for usbcore before plugging in the device: echo 1 >/sys/module/usbcore/parameters/old_scheme_first
You are right, this indeed works and probing is successful after the power-cycling attempt.
Also, you can try the patch below (without the module parameter set). I suspect it should be applied in any case, but it would be nice to know if it makes any difference in your case. Index: usb-devel/drivers/usb/core/hub.c =================================================================== --- usb-devel.orig/drivers/usb/core/hub.c +++ usb-devel/drivers/usb/core/hub.c @@ -5481,6 +5481,7 @@ loop: msleep(2 * hub_power_on_good_delay(hub)); usb_hub_set_port_power(hdev, hub, port1, true); msleep(hub_power_on_good_delay(hub)); + hub_port_debounce_be_stable(hub, port1); } } if (hub->hdev->parent ||
Unfortunately, this doesn't fix it. It changes the log output a bit but still does not enumerate:
[ 199.295695] usb 1-1.2: new full-speed USB device number 25 using ehci-pci [ 199.360684] usb 1-1.2: device descriptor read/64, error -32 [ 199.534678] usb 1-1.2: device descriptor read/64, error -32 [ 199.708671] usb 1-1.2: new full-speed USB device number 26 using ehci-pci [ 199.773666] usb 1-1.2: device descriptor read/64, error -32 [ 199.941602] usb 1-1.2: device descriptor read/64, error -32 [ 200.044871] usb 1-1-port2: attempt power cycle [ 200.528631] usb 1-1.2: new full-speed USB device number 27 using ehci-pci [ 200.940603] usb 1-1.2: device not accepting address 27, error -32 [ 201.208592] usb 1-1.2: new full-speed USB device number 28 using ehci-pci [ 201.223783] usb 1-1.2: device descriptor read/8, error -32 [ 201.345772] usb 1-1.2: device descriptor read/8, error -32 [ 201.452899] usb 1-1-port2: unable to enumerate USB device I'm attaching usbmon traces with this patch. Regards, Jan #################################################### ffff94ff414f8a80 199261119 C Ii:1:002:1 0:2048 1 = 04 ffff94ff414f8a80 199261158 S Ii:1:002:1 -115:2048 1 < ffff94ff882bd840 199261199 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199261378 C Ci:1:002:0 0 4 = 01010100 ffff94ff882bd840 199261383 S Co:1:002:0 s 23 01 0010 0002 0000 0 ffff94ff882bd840 199261635 C Co:1:002:0 0 0 ffff94ff882bd840 199261661 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199261902 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 199288109 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199288463 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 199315108 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199315374 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 199342113 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199342504 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 199369107 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199369447 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 199369498 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd840 199369903 C Co:1:002:0 0 0 ffff94ff882bd840 199381106 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199381375 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd840 199381410 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd840 199381633 C Co:1:002:0 0 0 ffff94ff882bd840 199433148 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd840 199433339 C Ci:1:000:0 -32 0 ffff94ff882bd840 199433360 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd840 199433971 C Ci:1:000:0 -32 0 ffff94ff882bd840 199433988 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd840 199434342 C Ci:1:000:0 -32 0 ffff94ff882bd840 199434363 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd840 199434609 C Co:1:002:0 0 0 ffff94ff882bd840 199446107 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199446423 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd840 199446448 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd840 199446679 C Co:1:002:0 0 0 ffff94ff882bd840 199606111 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd840 199606348 C Ci:1:000:0 -32 0 ffff94ff882bd840 199606372 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd840 199607003 C Ci:1:000:0 -32 0 ffff94ff882bd840 199607090 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd840 199607593 C Ci:1:000:0 -32 0 ffff94ff882bd840 199607623 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd840 199608123 C Co:1:002:0 0 0 ffff94ff882bd840 199620108 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 199620506 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd840 199620531 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd840 199620770 C Co:1:002:0 0 0 ffff94ff882bd840 199782114 S Co:1:002:0 s 23 01 0001 0002 0000 0 ffff94ff882bd840 199782380 C Co:1:002:0 0 0 ffff94ff882bd900 199782433 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd900 199782639 C Co:1:002:0 0 0 ffff94ff882bd900 199794109 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd900 199794511 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd900 199794536 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd900 199794769 C Co:1:002:0 0 0 ffff94ff882bd900 199846142 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd900 199846554 C Ci:1:000:0 -32 0 ffff94ff882bd900 199846574 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd900 199846828 C Ci:1:000:0 -32 0 ffff94ff882bd900 199846842 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd900 199847170 C Ci:1:000:0 -32 0 ffff94ff882bd900 199847236 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd900 199847490 C Co:1:002:0 0 0 ffff94ff882bd900 199859108 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd900 199859470 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd900 199859496 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd900 199859726 C Co:1:002:0 0 0 ffff94ff882bd900 200014111 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd900 200014492 C Ci:1:000:0 -32 0 ffff94ff882bd900 200014516 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd900 200014828 C Ci:1:000:0 -32 0 ffff94ff882bd900 200014854 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < ffff94ff882bd900 200015180 C Ci:1:000:0 -32 0 ffff94ff882bd900 200015251 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd900 200015502 C Co:1:002:0 0 0 ffff94ff882bd900 200027108 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd900 200027318 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd900 200027345 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd900 200027579 C Co:1:002:0 0 0 ffff94ff882bd900 200182109 S Co:1:002:0 s 23 01 0001 0002 0000 0 ffff94ff882bd900 200182296 C Co:1:002:0 0 0 ffff94ff882bd840 200182354 S Co:1:002:0 s 23 01 0008 0002 0000 0 ffff94ff882bd840 200182551 C Co:1:002:0 0 0 ffff94ff882bd840 200390109 S Co:1:002:0 s 23 03 0008 0002 0000 0 ffff94ff882bd840 200390345 C Co:1:002:0 0 0 ffff94ff882bd840 200494114 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 200494318 C Ci:1:002:0 0 4 = 01010100 ffff94ff882bd840 200494345 S Co:1:002:0 s 23 01 0010 0002 0000 0 ffff94ff882bd840 200494571 C Co:1:002:0 0 0 ffff94ff882bd840 200521107 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 200521316 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 200548107 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 200548426 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 200575100 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 200575338 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 200602100 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 200602260 C Ci:1:002:0 0 4 = 01010000 ffff94ff882bd840 200602311 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd840 200602714 C Co:1:002:0 0 0 ffff94ff882bd840 200614101 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd840 200614389 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd840 200614416 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd840 200614842 C Co:1:002:0 0 0 ffff94ff882bd840 200666141 S Co:1:000:0 s 00 05 001b 0000 0000 0 ffff94ff882bd840 200666529 C Co:1:000:0 -32 0 ffff94ff414f8a80 200797181 C Ii:1:002:1 0:2048 1 = 04 ffff94ff414f8a80 200797212 S Ii:1:002:1 -115:2048 1 < ffff94ff882bd840 200870110 S Co:1:000:0 s 00 05 001b 0000 0000 0 ffff94ff882bd840 200870423 C Co:1:000:0 -32 0 ffff94ff414f8a80 201053174 C Ii:1:002:1 0:2048 1 = 04 ffff94ff414f8a80 201053190 S Ii:1:002:1 -115:2048 1 < ffff94ff882bd840 201079556 S Co:1:002:0 s 23 01 0001 0002 0000 0 ffff94ff882bd840 201079768 C Co:1:002:0 0 0 ffff94ff882bd900 201079814 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd900 201080045 C Co:1:002:0 0 0 ffff94ff882bd900 201092106 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd900 201092293 C Ci:1:002:0 0 4 = 03011100 ffff94ff882bd900 201092321 S Co:1:002:0 s 23 01 0010 0002 0000 0 ffff94ff882bd900 201092559 C Co:1:002:0 0 0 ffff94ff882bd900 201092596 S Co:1:002:0 s 23 03 0004 0002 0000 0 ffff94ff882bd900 201092819 C Co:1:002:0 0 0 ffff94ff882bd900 201294110 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd900 201294319 C Ci:1:002:0 0 4 = 03011000 ffff94ff882bd900 201294346 S Co:1:002:0 s 23 01 0014 0002 0000 0 ffff94ff882bd900 201294575 C Co:1:002:0 0 0 ffff94ff882bd900 201346134 S Co:1:000:0 s 00 05 001c 0000 0000 0 ffff94ff882bd900 201346293 C Co:1:000:0 0 0 ffff94ff882bd840 201360112 S Ci:1:028:0 s 80 06 0100 0000 0008 8 < ffff94ff882bd840 201360521 C Ci:1:028:0 -32 0 ffff94ff882bd840 201360558 S Ci:1:028:0 s 80 06 0100 0000 0008 8 < ffff94ff882bd840 201360922 C Ci:1:028:0 -32 0 ffff94ff882bd840 201360938 S Ci:1:028:0 s 80 06 0100 0000 0008 8 < ffff94ff882bd840 201361276 C Ci:1:028:0 -32 0 ffff94ff882bd840 201482107 S Ci:1:028:0 s 80 06 0100 0000 0008 8 < ffff94ff882bd840 201482304 C Ci:1:028:0 -32 0 ffff94ff882bd840 201482330 S Ci:1:028:0 s 80 06 0100 0000 0008 8 < ffff94ff882bd840 201482934 C Ci:1:028:0 -32 0 ffff94ff882bd840 201482954 S Ci:1:028:0 s 80 06 0100 0000 0008 8 < ffff94ff882bd840 201483278 C Ci:1:028:0 -32 0 ffff94ff882bd840 201590112 S Co:1:002:0 s 23 01 0001 0002 0000 0 ffff94ff882bd840 201590387 C Co:1:002:0 0 0 ffff94ff882bd900 201591835 S Co:1:002:0 s 23 01 0001 0002 0000 0 ffff94ff882bd900 201592045 C Co:1:002:0 0 0 ffff94ff882bd900 201592073 S Ci:1:002:0 s a3 00 0000 0002 0004 4 < ffff94ff882bd900 201592497 C Ci:1:002:0 0 4 = 01010000
