[syslinux] Syslinux 5.01 does not respond to keyboard

[Jack Kelly]

I am having touble using the latest syslinux. I installed it to an SD
card and non-interactive booting works fine (using DEFAULT in
syslinux.cfg). If I need to give input to syslinux at boot time (via
menu, vesamenu or even just the prompt), it ignores keypresses.

Syslinux 4.06 does not suffer from this problem.

I am running an Acer Aspire One AOA150. The POST screen calls it an
Insyde H2OBIOS. Here is its BIOS information from dmidecode:

BIOS Information
        Vendor: Acer
        Version: v0.3310
        Release Date: 10/06/2008
        ROM Size: 1024 kB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                BIOS ROM is socketed
                EDD is supported
                Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
                Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
                5.25"/360 kB floppy services are supported (int 13h)
                5.25"/1.2 MB floppy services are supported (int 13h)
                3.5"/720 kB floppy services are supported (int 13h)
                3.5"/2.88 MB floppy services are supported (int 13h)
                8042 keyboard services are supported (int 9h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                USB legacy is supported
                Targeted content distribution is supported

What other information can I provide to help you guys track this down?

-- Jack