Thought I would try a couple more options, just in case..<\/p>\n
First, I confirmed that the USB sound card works connected directly<\/strong><\/em> to one of the Pi USB ports (using a USB extension cable):<\/p>\nusb 1-1.2: new full speed USB device number 13 using dwc_otg Second…\u00a0\u00a0 I tried cutting the pin1 wire (+5V power) from an old USB cable, and using that cable to connect the hub, just in case this was causing the problems..\u00a0\u00a0 But, it made no difference…<\/p>\n Back to the drawing board…<\/p>\n Speculation:\u00a0\u00a0\u00a0 I wonder if the lack of a decent <ground> connection, or chassis, might be causing problems?\u00a0\u00a0\u00a0 All the USB power mains adapters seem to have just two pins (line and neutral), and a dummy (UK) plastic ground pin..<\/em><\/p>\n","protected":false},"excerpt":{"rendered":" Thought I would try a couple more options, just in case.. First, I confirmed that the USB sound card works connected directly to one of the Pi USB ports (using a USB extension cable): usb 1-1.2: new full speed USB device number 13 using dwc_otg usb 1-1.2: New USB device found, idVendor=0d8c, idProduct=000c usb 1-1.2: New USB …<\/span> Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[6,11,19,21],"tags":[178,196,304,306,313,348,383],"class_list":["post-201","post","type-post","status-publish","format-standard","hentry","category-crash-and-burn","category-hacks","category-opinion","category-raspberry-pi","tag-grounding","tag-hub","tag-power-supply","tag-problems","tag-raspberry-pi-2","tag-speculation","tag-usb"],"_links":{"self":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=201"}],"version-history":[{"count":0,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/201\/revisions"}],"wp:attachment":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nusb 1-1.2: New USB device found, idVendor=0d8c, idProduct=000c
\nusb 1-1.2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
\nusb 1-1.2: Product: Generic USB Audio Device
\ninput: Generic USB Audio Device\u00a0\u00a0\u00a0 as \/devices\/platform\/bcm2708_usb\/usb1\/1-1\/1-1.2\/1-1.2:1.3\/input\/input14
\ngeneric-usb 0003:0D8C:000C.0012: input: USB HID v1.00 Device [Generic USB Audio Device\u00a0\u00a0 ] on usb-bcm2708_usb-1.2\/input3<\/address>\n