Gentoo Archives: gentoo-user

From: luis jure <ljc@××××××××××××.uy>
To: gentoo-user <gentoo-user@l.g.o>
Subject: [gentoo-user] no dma on parallel port
Date: Tue, 11 Mar 2008 23:37:27
Message-Id: 20080311203717.639e6123@acme.acmenet
1 hello list, searching information that could help me solve the
2 problem of my old HP laserjet 1100 printing too slow, i found
3 something about dma and parallel port.
4
5 i activated ECP on the bios, the address of the port is 378, irq 7
6 and dma 3. but dma is not activated when booting:
7
8 lj@acme ~ $ dmesg | grep parp
9 Kernel command line: root=/dev/hda1 vga=773 ro parport=0x378,7,3
10 parport0: PC-style at 0x378 (0x778), irq 7 [PCSPP(,...)]
11 lp0: using parport0 (interrupt-driven)
12
13 lj@acme ~ $ cat /proc/sys/dev/parport/parport0/dma
14 -1
15
16 i have the drivers compiled in the kernel, not as modules. i added this
17 line in menu.lst:
18
19 kernel /boot/vmlinuz root=/dev/hda1 vga=773 ro parport=0x378,7,3
20
21 not sure about the syntax, i couldn't find anything in the grub
22 documentation about passing kernel parameters. anyway, i get no dma on
23 parport0.
24
25 i have an oldish soyo kt333 motherboard, and i tried this with
26 different recent kernels (2.6.23 and 24)
27
28 any help greatly appreciated.
29
30 best,
31
32 lj
33 --
34 gentoo-user@l.g.o mailing list