Re: new hardware?

[John Westerdale <jwesterd@xxxxxxxxxx>]

if a device is PCI, use lspci to collect before and after. 

If a device is USB, use lsusb the same way.

lsusb > before.txt

(plug in device)

lsusb  > after.txt

diff before.txt after.txt

same for lspci

watch /var/log/messages during any change: 

tail -100f /var/log/messages 

Can search on USB identifiers

lsusb -v | grep Device

....

Bus 001 Device 006: ID 046d:0994 Logitech, Inc. QuickCam Orbit/Sphere AF

....

can search google on 046d:0994 for specific devices.

lspci provides similar debug. try -v(v) (for detailed info)  and -n  (to see the device identifiers) using the slot number: 

[root@jwesterd-f33 ~]# lspci  | grep Wireless

3d:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)

And then:

[root@jwesterd-f33 ~]# lspci -s 3d:00.0  -vv | grep -e Speed -e Subsystem
Subsystem: Intel Corporation Dual Band Wireless-AC 8265
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L1, Exit Latency L1 <8us
LnkSta: Speed 2.5GT/s (ok), Width x1 (ok)
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-

and: 

[root@jwesterd-f33 ~]# lspci -s 3e:00.0  -vv | grep -e Speed -e Subsystem
Subsystem: Samsung Electronics Co Ltd Device a801
LnkCap: Port #0, Speed 8GT/s, Width x4, ASPM L1, Exit Latency L1 <64us
LnkSta: Speed 8GT/s (ok), Width x4 (ok)
LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-

John Westerdale 

Sr Container Consultant  

Red Hat NYC Office/WFH 

john.westerdale@xxxxxxxxxx   

M: 201-376-9993     IM: jwesterd   He / Him / His

On Fri, Oct 30, 2020 at 8:38 AM J.Witvliet--- via users <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

Did you install hardware to a running machine? Not all hardware can appreciate that....

If it is an USB-device, you might have to trigger the udev-rules.

From: "Todd Chester via users" <users@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Friday, 30 October 2020 at 10:21:03
To: "fedora" <users@xxxxxxxxxxxxxxxxxxxxxxx>
Cc: "Todd Chester" <ToddAndMargo@xxxxxxxx>
Subject: new hardware?

Hi All,

Just a refresher. If I add a new piece of presumably supported
hardware to my computer, do I need to run some kind of scan
to add it to the fray?  Or does a reboot take care of that?

-T
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