Re: console freeze

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

On Tue, Sep 10, 2024 at 08:41:14PM +0200, Manuel Bouyer wrote:
> Does it means that the fifo is full ?
> Are interrupts comming in properly ? 

Disk and network I/O are fine, hence it must be a serial port specific 
interrupt issue. 

The problem vanishes when booting with ACPI disabled, or by booting with
ACPI but with com at acpi devices disabled in userconf.

With ACPI:
acpi0 at mainbus0: Intel ACPICA 20221020
acpi0: X/RSDT: OemId <SUPERM,SMCI--MB,01072009>, AslId <AMI ,00010013>
acpi0: MCFG: segment 0, bus 0-63, address 0x00000000f8000000
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0xFFFFB9E571AED808 0003D3 (v02 PmRef  Cpu0Cst  00003001 INTL 20051117)
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0xFFFFB9E538F2A008 0005AA (v02 PmRef  ApIst    00003000 INTL 20051117)
ACPI: Dynamic OEM Table Load:
ACPI: SSDT 0xFFFFB9E538E25D48 000119 (v02 PmRef  ApCst    00003000 INTL 20051117)
acpi0: SCI interrupting at int 9
acpi0: fixed power button present
(...)
com0 at acpi0 (UAR1, PNP0501-0): io 0x3f8-0x3ff irq 4
com0: ns16550a, 16-byte FIFO
com0: console


Without ACPI:
ichlpcib0 at pci0 dev 31 function 0: Intel H81 LPC (rev. 0x05)
isa0 at ichlpcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, 16-byte FIFO
com0: console

There is the tentation to point finger at the machine's BIOS, but still,
it worked fine on 9.3/amd64 and still works fine on 10.0/i386.



-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost