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From: Bjorn Helgaas <helgaas@kernel.org>
To: Vidya Sagar <vidyas@nvidia.com>
Cc: Thomas Witt <kernel@witt.link>,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: [Bug 216877] New: Regression in PCI powermanagement breaks resume after suspend
Date: Mon, 2 Jan 2023 11:15:16 -0600	[thread overview]
Message-ID: <20230102171516.GA783946@bhelgaas> (raw)
In-Reply-To: <bug-216877-41252@https.bugzilla.kernel.org/>

Thank you very much for your report and all the work of bisecting,
Thomas!  If you have a chance, can you collect the "sudo lspci -vv"
output (the one attached doesn't include the ASPM info, probably
because lspci wasn't run as root), and also a complete dmesg log from
before the suspend?

On Mon, Jan 02, 2023 at 02:02:51PM +0000, bugzilla-daemon@kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=216877
> 
>             Bug ID: 216877
>            Summary: Regression in PCI powermanagement breaks resume after
>                     suspend
>     Kernel Version: 6.0.0-rc1
> 
> Created attachment 303512
>   --> https://bugzilla.kernel.org/attachment.cgi?id=303512&action=edit
> output of git bisect log
> 
> After commit 5e85eba6f50dc288c22083a7e213152bcc4b8208 "PCI/ASPM:
> Refactor L1 PM Substates Control Register programming" my Laptop
> does not resume PCI devices back from suspend.
> 
> My Laptop is a Tuxedo Infinitybook S 14 v5, as far as I can tell
> they use a Clevo L140CU Mainboard.
> 
> The main symptom is:
> iwlwifi 0000:02:00.0: Unable to change power state from D3hot to D0, device inaccessible
> nvme 0000:03:00.0: Unable to change power state from D3hot to D0, device inaccessible
> 
> after that, the level of interaction I still have with the laptop
> varies, but It cannot run dmesg and it cannot do a clean reboot. The
> issue occurs on every suspend/resume cycle.

       reply	other threads:[~2023-01-02 17:15 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-216877-41252@https.bugzilla.kernel.org/>
2023-01-02 17:15 ` Bjorn Helgaas [this message]
2023-01-04  0:30   ` [Bug 216877] New: Regression in PCI powermanagement breaks resume after suspend Bjorn Helgaas
2023-01-04  8:44     ` Thomas Witt
2023-01-04 15:02       ` Bjorn Helgaas
2023-01-04 15:37         ` Thomas Witt
2023-01-26 19:24           ` Thomas Witt
2023-02-02 20:49             ` Bjorn Helgaas

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