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From: Pavel Machek <pavel@ucw.cz>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: kernel list <linux-kernel@vger.kernel.org>,
	linux-usb@vger.kernel.org, gregkh@linuxfoundation.org,
	bhelgaas@google.com, linux-pci@vger.kernel.org
Subject: Re: v4.10-rc6 boot regression on Intel desktop, does not boot after cold boots, boots after reboot
Date: Fri, 3 Feb 2017 21:51:29 +0100	[thread overview]
Message-ID: <20170203205129.GA3791@amd> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1702031415140.1794-100000@iolanthe.rowland.org>

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Hi!

> > Hmm. I moved keyboard between USB ports, and now 4.10-rc6 no longer
> > boots. v4.6 works ok. Let me try with keyboard unplugged... no, I
> > could not get it to work. I believe v4.9 and some v4.10-rc's worked,
> > but I'll have to double check.
> 
> But all the kernel versions worked when the keyboard was plugged into
> its original USB port?

Aha. So it looks difference is probably in "where is keyboard plugged
in" but in "reboot" vs. "cold boot". I did not do a cold boot in quite
a while :-(.

Booting to grub, then hitting ctrl-alt-del is enough to make it work. Ouch.

It happens with current Linus' tree.

"usbcore.nousb usbcore.nousb=1" on kernel command line does not
help. So maybe it is not USB after all. (Sorry).

> Last message I can see on console is something like:
>
> pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]

If I do the reboot dance with 4.10-rc6, messages around the hang are:

[    0.281948] RPC: Registered named UNIX socket transport module.
[    0.282009] RPC: Registered udp transport module.
[    0.282068] RPC: Registered tcp transport module.
[    0.282126] RPC: Registered tcp NFSv4.1 backchannel transport
module.
[    0.282205] pci 0000:00:02.0: Video device with shadowed ROM at
[mem 0x000c0000-0x000dffff]
[    0.316266] PCI: CLS 64 bytes, default 64
[    0.316330] PCI-DMA: Using software bounce buffering for IO
(SWIOTLB)
[    0.316395] software IO TLB [mem 0xb987e000-0xbd87e000] (64MB)
mapped at [ffff8800b987e000-ffff8800bd87dfff]
[    0.317912] futex hash table entries: 1024 (order: 5, 131072 bytes)
[    0.318646] workingset: timestamp_bits=62 max_order=20
bucket_order=0

So I guess this is something with PCI subsystem?

Ideas welcome...

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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       reply	other threads:[~2017-02-03 20:51 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20170203190414.GA3701@amd>
     [not found] ` <Pine.LNX.4.44L0.1702031415140.1794-100000@iolanthe.rowland.org>
2017-02-03 20:51   ` Pavel Machek [this message]
2017-02-03 21:18     ` Pavel Machek
2017-02-03 21:59       ` Alan Stern
2017-02-03 22:43         ` Pavel Machek
2017-02-04  8:48           ` Pavel Machek
2017-02-04 16:52             ` Pavel Machek
2017-02-12 12:00             ` Pavel Machek
2017-02-14 17:59       ` v4.10-rc8 (-rc6) " Pavel Machek
2017-02-14 19:27         ` Pavel Machek
2017-02-14 19:54           ` Alan Stern
2017-02-23 16:28           ` Frederic Weisbecker
2017-02-23 18:40             ` Pavel Machek
2017-02-25  3:28               ` Frederic Weisbecker
2017-03-18 14:42               ` Frederic Weisbecker
2017-04-03 15:38               ` Frederic Weisbecker
2017-04-03 18:20                 ` Pavel Machek
2017-04-12 15:08                   ` Frederic Weisbecker
2017-04-15 21:34                     ` Pavel Machek
2017-04-20 14:52                       ` Frederic Weisbecker
     [not found]         ` <CA+55aFyYAztA+Onquy9ODeC9_YBL_fXAd-RgeUVUhpsjK81ZVQ@mail.gmail.com>
     [not found]           ` <CA+55aFxU1D0hAPJuhkKaFBByi=8vpw7dJUX=FfpoqnZLWsvxig@mail.gmail.com>
     [not found]             ` <CA+55aFwt6pbt2STzRh1yCdoo7AnCLFqnPkkrYk4_BGFuvT2VCw@mail.gmail.com>
     [not found]               ` <CA+55aFzMiXXw9gqNCMCSc+O5HfcqWHXfqbdtbvcOmAHM9_wNig@mail.gmail.com>
     [not found]                 ` <CA+55aFxuXgsCyMgrRDHdM6BQaej68QoU8TwdM=3LYu9LMBf4fQ@mail.gmail.com>
2017-02-15 17:23                   ` Pavel Machek
2017-02-15 23:20                     ` Pavel Machek
2017-02-15 23:34                       ` Linus Torvalds
2017-02-16 11:11                         ` Pavel Machek
2017-02-16 17:25                           ` Pavel Machek
2017-02-16 18:13                             ` Frederic Weisbecker
2017-02-16 18:20                               ` Linus Torvalds
2017-02-16 18:34                                 ` Frederic Weisbecker
2017-02-16 19:34                                   ` Thomas Gleixner
2017-02-16 20:06                                     ` Pavel Machek
2017-02-16 20:21                                       ` Linus Torvalds
2017-02-16 20:48                                         ` Pavel Machek
2017-02-18  8:55                                         ` Pavel Machek
2017-02-17  1:11                                       ` Greg Kroah-Hartman
2017-02-17 14:04                                     ` Frederic Weisbecker
2017-02-17 16:37                                       ` Thomas Gleixner
2017-02-17 17:05                                         ` Pavel Machek
2017-02-17 18:43                                           ` Frederic Weisbecker
2017-02-16 19:06                             ` Pavel Machek
2017-02-17 14:40                               ` Frederic Weisbecker

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