Hi,
This laptop suffers of random kernel hangs at boot: I tested kernel 4.1.8,
4.2.1 and 4.3-rc3 and they are all affected.
Every time I turn on my laptop I have to boot several times to be able to
reach the sddm login because often I get hangs which prevent the system to
boot. Once booted I don't have any problem anymore, until the next boot.
With "acpi=off" the system boots flawlessly, while with "acpi=ht" I still
get random hangs, so I guess the problem is in the ACPI table parsing code
itself, or perhaps the SMP code.
I recompiled kernel 4.3-rc3 with CONFIG_ACPI_DEBUG=y and I attached full
log from a serial console, booting with "debug acpi.debug_level=0x2003"
(warn, error and tables debug enabled):
https://bugzilla.kernel.org/attachment.cgi?id=189041
Distro is Arch Linux. Please let me know if you need further logs.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105251
Niccolò Belli
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