Re: port-i386/53894 ("ehci_sync_hc: timed out" with ACPI/SMP enabled on eBox 3352DX3-AP)

[Andrius V <vezhlys%gmail.com@localhost>]

The following reply was made to PR port-i386/53894; it has been noted by GNATS.

From: Andrius V <vezhlys%gmail.com@localhost>
To: Nick Hudson <nick.hudson%gmx.co.uk@localhost>
Cc: gnats-bugs%netbsd.org@localhost, port-i386-maintainer%netbsd.org@localhost, 
	netbsd-bugs%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, gutteridge%netbsd.org@localhost
Subject: Re: port-i386/53894 ("ehci_sync_hc: timed out" with ACPI/SMP enabled
 on eBox 3352DX3-AP)
Date: Thu, 24 Jan 2019 00:10:42 +0200

 On Mon, Jan 21, 2019 at 8:40 AM Nick Hudson <nick.hudson%gmx.co.uk@localhost> wrote:
 >
 > On 20/01/2019 23:50, gutteridge%NetBSD.org@localhost wrote:
 > > Synopsis: "ehci_sync_hc: timed out" with ACPI/SMP enabled on eBox 3352DX3-AP
 >
 > This sounds more like an MP/interrupt problem for your system than usb.
 >
 > ehcidebug=1 should shows us if we're seeing interrupts.
 >
 
 Hi,
 
 Do you mean EHCI_DEBUG option in kernel configuration or something
 else? Currently I was testing kernel which included EHCI_DEBUG option
 line and I set hw.ehci.debug value as well, however I didn't see any
 interrupt messages during boot. There were no vmstat output changes
 either (I tried delaying it for few minutes, but it didn't give more
 than few additional messages of "usb_event_thread#0@0: sc 0xc3d5d1b8
 woke up", "usb_discover#1@0: called!" compared to original one I've
 attached). After removing USB Ethernet device and leaving USB keyboard
 only, "ehci_sync_hc: timed out" messages disappeared from boot log,
 but USB keyboard still didn't power up (no LED lights lit up),
 appeared in dmesg or worked nevertheless. Finally, I tried to boot
 without SMP but with ACPI enabled (boot -1), the problem stayed the
 same. So I would assume it can be ACPI related issue, since disabling
 ACPI and SMP makes USB devices work (though with occasional
 reconnection cycles). I couldn't test an opposite situation (SMP
 enabled/ACPI disabled), because I am getting IDE interrupt errors in
 this case and system fails to boot.
 
 Regards,
 Andrius V
 
 
 On Mon, Jan 21, 2019 at 8:40 AM Nick Hudson <nick.hudson%gmx.co.uk@localhost> wrote:
 >
 > On 20/01/2019 23:50, gutteridge%NetBSD.org@localhost wrote:
 > > Synopsis: "ehci_sync_hc: timed out" with ACPI/SMP enabled on eBox 3352DX3-AP
 >
 > This sounds more like an MP/interrupt problem for your system than usb.
 >
 > ehcidebug=1 should shows us if we're seeing interrupts.
 >
 > Nick
 >