From: Jan Engelhardt <jengelh@inai.de>
To: linux-acpi@vger.kernel.org
Subject: Linux hangs at ACPI init on Medion P15648 MD63490
Date: Fri, 14 Feb 2020 20:28:52 +0100 (CET) [thread overview]
Message-ID: <nycvar.YFH.7.76.2002141734590.24119@n3.vanv.qr> (raw)
Greetings.
I have a problem with a certain x86 laptop, and judging from the
kernel's output, this looks very much like a broken ACPI table.
Versions tried are 5.3.8 (Fedora31 liveimage), 5.5.2 (openSUSE
Tumbleweed installer) and 5.6.0-rc1+
(b19e8c68470385dd2c5440876591fddb02c8c402; self compile), all
exhibiting the same hang.
The last messages emitted by 5.6.0-rc1+ are:
ACPI: 11 ACPI AML tables successfully acquired and loaded
ACPI: EC: EC started
ACPI: EC: interrupt blocked
ACPI: \: Used as first EC
ACPI: \: GPE=0x10, IRQ=-1, EC_CMD/EC_SC=0x66, EC_DATA=0x62
ACPI: EC: Boot ECDT EC used to handle transactions
<hang>
The full boot procedure is made available at
http://inai.de/files/m921.mp4 [79MB].
Curiously, FreeBSD 12.1 can be booted without issues, so either they
already workaround the issue, or don't trigger it in the first place.
After about 20 minutes, the kernel issues a stack trace.
http://inai.de/files/m922.mp4 [4.2M]; this seems to repeat every
20 minutes:
Task swapper blocked for more than 491 seconds.
schedule
schedule_timeout
__down_timeout
down_timeout
acpi_os_wait_semaphore
acpi_ex_system_wait_semaphore
acpi_ev_acquire_global_lock
acpi_ex_acquire_mutex_object
acpi_ex_acquire_global_lock
acpi_ex_write_data_to_field
acpi_ex_store_object_to_node
acpi_ex_store
acpi_ex_opcode_1A_1T_1R
acpi_ds_exec_end_op
acpi_ps_parse_loop
[a few frames more]
For comparison, a (vastly) different laptop with a proper firmware,
the EC messages go like this:
<Fujitsu U728 for comparison>
ACPI: EC: EC started
ACPI: EC: interrupt blocked
ACPI: \_SB_.PCI0.LPCB.EC__: Used as first EC
ACPI: \_SB_.PCI0.LPCB.EC__: GPE=0x22, EC_CMD/EC_SC=0x66, EC_DATA=0x62
ACPI: \_SB_.PCI0.LPCB.EC__: Boot DSDT EC used to handle transactions
ACPI: Interpreter enabled
It kind of makes sense that, if "\" is seen as an EC in the Medion that
it is not going to work.
next reply other threads:[~2020-02-14 19:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 19:28 Jan Engelhardt [this message]
2020-02-16 0:32 ` Linux hangs at ACPI init on Medion P15648 MD63490 Rafael J. Wysocki
2020-02-16 14:15 ` Jan Engelhardt
2020-02-16 20:49 ` Rafael J. Wysocki
2020-02-17 0:10 ` Jan Engelhardt
2020-02-17 20:23 ` Rafael J. Wysocki
2020-02-25 15:09 ` Moore, Robert
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=nycvar.YFH.7.76.2002141734590.24119@n3.vanv.qr \
--to=jengelh@inai.de \
--cc=linux-acpi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).