[bug #55288] Freezes at Countdown 10 when USB Keyboard Attached

[Dmitri Seletski]

Follow-up Comment #1, bug #55288 (project grub):

Hello Grub Devs!
Thanks for mighty fine job you are doing with this project!

Would love to buy you guys and girls beer, if you ever come to Dublin, Ireland
- feel free to email me about that beer or other beverage of your choice!

With that said, I have a bug I would like to report. And before I describe it,
I would like to point out, there are a few bug that are just like mine. All of
those I strongly suspect are related.

There is this one, then that those ones:
https://savannah.gnu.org/bugs/?47636
https://savannah.gnu.org/bugs/?37470

I suspect it's to do with how grub handles USB3 host with USB2 devices.

I have USB3 external switch.(TP-Link UH720 USB 3.0 Hub)

But I believe I have had this issue when i just connected keyboard to my USB3
port on mother board.(for extra power)

HyperX is the keyboard(has 2 usb cables one for extra guice for extra USB slot
on it and for nice shiny keys on the actual keyboard).

long story short, everything but grub works.
Bios has no issues. Once I pass by grub, Linux kernel has no issues and
Windows on different laptop has no issues with hub and keyboard.(hence why I
got it, i got 6 ports used up, more than laptop has, plus i change hub between
home pc and work PC, so i can reuse my nice
webcam/soundcard/mouse/keyboard/etc)

I can do extra tests to isolate issue to either hub or to keyboard (I have
second keyboard somewhere in the house).
And I suspect its USB1.1 or 2 or whatever the hell it is, with USB3 host
controller.

Grub reliably hangs the moment count down and rest of non graphic interface is
visible. I got non graphical mode.

sys-boot/grub
      Latest version available: 2.04-r1
      Latest version installed: 2.04-r1

Gentoo with
Linux dimkosPC 5.6.3 #2 SMP PREEMPT Fri Apr 17 20:30:44 IST 2020 x86_64 AMD
Ryzen 9 3950X 16-Core Processor AuthenticAMD GNU/Linux

I did trick, once POST finished i switch off hub, grub continues, i switch on
host and all works, once kernel started booting.


when tried to get lsusb -vv i get this a few times:
 can't get device qualifier: Resource temporarily unavailable


I suspect its due to external usb3 hub

I am not lazy and would do physical troubleshooting, as its easiest one, but
feeling sickly.

(file #49138, file #49139)
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Additional Item Attachment:

File name: lspicVV                        Size:100 KB
    <https://savannah.gnu.org/file/lspicVV?file_id=49138>

File name: lsusbVV                        Size:115 KB
    <https://savannah.gnu.org/file/lsusbVV?file_id=49139>



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