[sane-devel] Umax 1220P not detected with /dev/parport0

[stef]

	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:
> 
............