[Bug 237666] repeated messages of "uhub_reattach_port: giving up port reset - device vanished"

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237666

--- Comment #78 from Mike Karels <karels at freebsd.org> ---
I built a stable/12 kernel with ACPI debug.  ACPI_DEBUG by itself didn't
compile; it used global variables conditional on ACPI_DEBUGGER.  I added
ACPI_DEBUGGER, and added that to conf/options.

Using the suggested loader variables, there was no new output.  I don't see
ACPI_LV_ERROR in acpi.c.  I tried verbosity1, and that spewed messages so fast
it prevented a successful boot in 20 minutes or so.  I then tried ACPI_LV_INFO.
 Here is what is logged in about a second, from one "vanished" message to the
next:

Dec  7 09:09:35 pughole kernel: uhub_reattach_port: giving up port reset -
devic
e vanished
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0000) Dev(0003) Func(0002) Reg(00b2)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0000) Dev(0003) Func(0002) Reg(00aa)
Dec  7 09:09:35 pughole syslogd: last message repeated 3 times
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 1 (8) Seg(0000) Bus(0000) Dev(0003) Func(0002) Reg(00aa)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0000) Dev(0003) Func(0002) Reg(00aa)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0000) Dev(0003) Func(0003) Reg(00b2)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0000) Dev(0003) Func(0003) Reg(00aa)
Dec  7 09:09:35 pughole syslogd: last message repeated 3 times
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 1 (8) Seg(0000) Bus(0000) Dev(0003) Func(0003) Reg(00aa)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0000) Dev(0003) Func(0003) Reg(00aa)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0000) Func(0000) Reg(00b2)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0000) Func(0000) Reg(00aa)
Dec  7 09:09:35 pughole syslogd: last message repeated 3 times
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 1 (8) Seg(0000) Bus(0080) Dev(0000) Func(0000) Reg(00aa)
Dec  7 09:09:35 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0000) Func(0000) Reg(00aa)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0000) Reg(00b2)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0000) Reg(00aa)
Dec  7 09:09:36 pughole syslogd: last message repeated 3 times

ec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle: Pci-Confi
g 1 (8) Seg(0000) Bus(0080) Dev(0002) Func(0000) Reg(00aa)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0000) Reg(00aa)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0001) Reg(00b2)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0001) Reg(00aa)
Dec  7 09:09:36 pughole syslogd: last message repeated 3 times
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 1 (8) Seg(0000) Bus(0080) Dev(0002) Func(0001) Reg(00aa)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0001) Reg(00aa)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0002) Reg(00b2)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0002) Reg(00aa)
Dec  7 09:09:36 pughole syslogd: last message repeated 3 times
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 1 (8) Seg(0000) Bus(0080) Dev(0002) Func(0002) Reg(00aa)
Dec  7 09:09:36 pughole kernel:  exregion-0527 ExPciConfigSpaceHandle:
Pci-Confi
g 0 (8) Seg(0000) Bus(0080) Dev(0002) Func(0002) Reg(00aa)
Dec  7 09:09:36 pughole kernel: uhub_reattach_port: giving up port reset -
devic
e vanished

I have no idea if this includes any useful information.

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