From: Takashi Iwai <tiwai@suse.de>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Noah Davis <noahadvs@gmail.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: [REGRESSION] 4.17 failed to probe ACPI PnP
Date: Tue, 19 Jun 2018 08:12:57 +0200 [thread overview]
Message-ID: <s5h8t7bfgnq.wl-tiwai@suse.de> (raw)
Hi,
there seems a regression regarding the probe of ACPI PnP devices.
The detailed logs are found in openSUSE bugzilla:
https://bugzilla.opensuse.org/show_bug.cgi?id=1098074
In short, since 4.17, the laptop keyboard is lost on ASUS K501UW.
Comparing the kernel messages and other logs indicates that the
complete lost of ACPI PnP devices:
On 4.16:
[ 0.390244] pnp: PnP ACPI: found 9 devices
On 4.17:
[ 0.263266] pnp: PnP ACPI: found 0 devices
... and this leads to the failure of PS/2 keyboard detection due to
the missing PNP030b entry as a result.
Any hints for debugging this are appreciated.
Thanks!
Takashi
next reply other threads:[~2018-06-19 6:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-19 6:12 Takashi Iwai [this message]
2018-06-19 8:28 ` [REGRESSION] 4.17 failed to probe ACPI PnP Rafael J. Wysocki
2018-06-19 8:38 ` Takashi Iwai
2018-06-20 6:37 ` Takashi Iwai
2018-06-20 7:28 ` Rafael J. Wysocki
2018-06-20 9:11 ` Takashi Iwai
2018-06-20 20:20 ` Takashi Iwai
2018-06-20 22:12 ` Rafael J. Wysocki
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