I assume you are using a kernel version >2.4.18. Since 2.4.19, and the
introduction of O_NONBLOCK semantics in /dev/parport, I get the same hangs when
my BIOS is set to EPP. These hangs do not happen with direct hardware access.
Personnaly, I set my BIOS to ECP/EPP, and all work fine.
I suspect that pure EPP mode has an IRQ trouble, but I have no other fix
than changing BIOS settings, or downgrading kernel version.
Regards,
Stef
On Wed, Oct 16, 2002 at 09:09:14PM +0100, Ryan Harkin wrote:
> Hi,
> I have a Umax 1220P parallel port scanner that I have sucessfully installed
> with SuSE 7.2 to use /dev/parport0 as both root and normal user.
>
> Now I am trying to get it to work with a newer distro and wondered if someone
> could help out. And I realise that you all have work to do on 1.0.9!
>
> I have tried SuSE 8.0, Mandrake 9.0 and now RedHat 8.0. In all cases I can
.....
> [umax_pp_low] UMAX Astra 1220/1600/2000 P ASIC detected (mode=7)
> [umax_pp_low] SlowNibbleRegisterRead: found 0x20 expected 0x0 \
> (umax_pp_low.c:4757)
> [umax_pp_low] 32 bits EPP data transfer
> [umax_pp_low] Count-down value is 0xCF (umax_pp_low.c:5184)
> [umax_pp_low] Scanner init done ...
> [umax_pp_low] Probe done ...
>
> Then the process hangs indefinitely. OK, so to get some debug, I install
> SANE
> and test using scanimage:
>
............
