Tim,
On 2021-10-27 19:01, Tim via users wrote:
On Wed, 2021-10-27 at 04:10 +1100, Philip Rhoades via users wrote:
I am getting nothing recorded in /var/log/messages when I plug in
the GoPro and push its power button (plugging in any other USB device
is working of course) so maybe it is the USB port on the camera that
is the problem? - is there any way to debug that from the Fedora
workstation?
Before you plug it in, open a command line and run: dmesg
Open another command line window, plug it in, and run dmesg in the
second window.
Now you can compare the messages at the end of each dump against each
other.
It is simpler to just: tail -f /var/log/messages
If it recognised the hardware, you should get some information about
it. If not, a simple first test is to try another USB lead. You can
have broken data lines, and still have functioning power lines, within
the cable, allowing it to charge.
Right - see next reply to Samuel's post . .
Thanks,
Phil.
By way of example, when I plug in a webcam, it shows all this gubbins:
[3887829.895943] usb 1-12: new high-speed USB device number 51 using
xhci_hcd
[3887830.123901] usb 1-12: New USB device found, idVendor=0c45,
idProduct=6366, bcdDevice= 1.00
[3887830.123928] usb 1-12: New USB device strings: Mfr=2, Product=1,
SerialNumber=3
[3887830.123936] usb 1-12: Product: CM200
[3887830.123943] usb 1-12: Manufacturer: Sonix Technology Co., Ltd.
[3887830.123949] usb 1-12: SerialNumber: SN0001
[3887830.174819] usb 1-12: 3:1: cannot get freq at ep 0x84
[3887830.395965] Linux video capture interface: v2.00
[3887830.437188] uvcvideo: Found UVC 1.00 device CM200 (0c45:6366)
[3887830.462969] input: CM200 as
/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input51
[3887830.463068] usbcore: registered new interface driver uvcvideo
[3887830.463070] USB Video Class driver (1.1.1)
[3887830.921714] usb 1-12: 3:1: cannot get freq at ep 0x84
[3887830.993514] usb 1-12: 3:1: cannot get freq at ep 0x84
[3892705.253593] snd_hda_intel 0000:00:1f.3: Unstable LPIB (352800 >=
176400); disabling LPIB delay counting
--
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Linux 3.10.0-1160.42.2.el7.x86_64 #1 SMP Tue Sep 7 14:49:57 UTC 2021
x86_64
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--
Philip Rhoades
PO Box 896
Cowra NSW 2794
Australia
E-mail: phil@xxxxxxxxxxxxx
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