I inherited an HP workstation Z-mumble-mumble from Michael Dexter. An 820 maybe. It also had trouble with USB3 ports. I ended up buying a PCIe card to get USB3, and that works, but I (from a year or more old memory, which might be faulty), I can't boot off of it. The other trouble with the machine is fan control doesn't work from linux, I have to set the fan speed in BIOS and then its static (i.e. loud) all the time. If I don't crank the fan speed in BIOS, then I can get what I presume are thermal crashes under heavy compute loads. I'm running debian on it, in case that ends up being remotely relevant.
If you discover the problem with your USB ports, please report back in case it might be relevant for me too. Thanks! -- Russell Senior [email protected] On Sat, Nov 9, 2024 at 9:50 AM Ben Koenig <[email protected]> wrote: > > On Friday, November 8th, 2024 at 8:15 PM, American Citizen > <[email protected]> wrote: > > > I have a Hewlett Packard Z420 workstation. About a week ago, the USB > > ports stopped working. Tonight I identified that it is the USB 3.0 ports > > that are not working, the USB 2.0 is still working just fine. > > > > Has anyone had experience troubleshooting USB 3.0 ports under linux? > > > > - Randall > > > Based on your description of the problem the OS is irrelevant. Most of the > troubleshooting at this stage is pure hardware. > > If you want, you can use the following commands to see if the USB3 host > controller is detected by Linux and if any devices are detected. > To see a brief list of all USB devices, including host controllers: > $ lsusb > > To see what happens when a device is inserted, unplug all devices from your > USB3 slots and then run the following command (as root): > $ dmesg -w > > The -w argument tells dmesg to print the log and any new messages as they > occur. Once you have that running you can plug in a USB device and it should > immediately start printing messages related to the device you inserted. > > You can also automate this to only give you the difference, here's a rough > example. > dmesg > dmesg-before.log > # insert the device > dmesg > dmesg-after.log > diff dmesg-before.log dmesg-after.log > > Either way, when running into USB problems I always step away from the OS. > It's much better to start with a "golden device" such as a mouse or keyboard > that you know works and diagnose with that. > -Ben >
