Tim Waugh wrote:
> > Because I said to my BIOS to use EPP instead of ECP+EPP, I can't print
> > anymore with my printer (through my ZIP-drive). When I change the
> > BIOS-setting to ECP+EPP, I can print.
>
> This is a bug: you ought to be able to print regardless of the port's
> mode. What exactly happens when you try to print, through the ZIP
> drive, when in EPP mode? Are there any kernel messages? What is the
> behaviour of this:
>
> # echo blah > /dev/lp0
The printer doesn't react, although the system does say that I'm
printing something.
$ lpq
lp is ready and printing
Rank Owner Job Files Total Size
active User1 53 (standard input) 7022 bytes
> Do you still find it faster under 2.2?
The speed of copying is less with 2.4.0test1-ac9 than with 2.2.15, but
the whole system reacts differently. With 2.2.15, playing a game
(Heretic II Demo) while copying isn't that hard (although the game does
gets slower - a little), but 2.4.0test1-ac9 is almost impossible.
Heretic just waits until the copying is done, and then resumes.
> Can you show me timings?
Yes, ofcourse:
(commands executed just after logging in, without Xserver on - moving
mouse to see if system gets slower)
- With 2.2.15 -
$ time cp /home/User1/Downloads/Tarballs/linux-2.4.0-test1.tar.gz
0.13user 4.30system 1:02.16elapsed 7%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (5254major+38minor)pagefaults 19swaps
--> Mouse doesn't shock...
- With 2.4.0test1-ac9 -
$ time cp /home/User1/Downloads/Tarballs/linux-2.4.0-test1.tar.gz
0.03user 3.74system 0:56.70elapsed 6%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (139major+36minor)pagefaults 0swaps
--> Mouse does shock...
Although it seems I don't have a problem with speed, I must say that
waiting a whole minute for copying 20 Meg feels longer than playing a
game or something while copying 20 Meg in more than a minute. But that
also frightens me. If my whole system gets slower with 2.4.0test1-ac9,
why doesn't time give a higher CPU-usage?
> As I said, I found it quite a lot faster to do a 'cp', but I think a lot of
> that is to do with VM changes rather than anything in the driver.
What is VM? Virtual Memory?
> relevant sections of dmesg output might help.
- 2.2.15 -
...
parport0: PC-style at 0x378 [SPP,PS2,EPP]
parport_probe: failed
parport0: no IEEE-1284 device present.
...
lp0: using parport0 (polling).
...
ppa: Version 2.03 (for Linux 2.2.x)
ppa: Found device at ID 6, Attempting to use EPP 16 bit
ppa: Communication established with ID 6 using EPP 16 bit
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
scsi1 : Iomega VPI0 (ppa) interface
scsi : 2 hosts.
Vendor: IOMEGA Model: ZIP 100 Rev: J.03
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi removable disk sda at scsi1, channel 0, id 6, lun 0
scsi : detected 1 SCSI disk total.
sda : READ CAPACITY failed.
sda : status = 0, message = 00, host = 0, driver = 28
sda : extended sense code = 2
sda : block size assumed to be 512 bytes, disk size 1GB.
...
Partition check:
sda:scsidisk I/O error: dev 08:00, sector 0
unable to read partition table
...
lp0 off-line
...
( While booting, there is no ZIP-disk inserted, therefor the
failed-msg's. )
- 2.4.0test1-ac9 -
...
parport0: PC-style at 0x378 [PCSPP,TRISTATE,EPP]
parport0: cpp_mux: aa55f00f52ad51(00)
parport0: cpp_daisy: aa5500ff(00)
parport0: assign_addrs: aa5500ff(00)
parport0: cpp_mux: aa55f00f52ad51(00)
parport0: cpp_daisy: aa5500ff(00)
parport0: assign_addrs: aa5500ff(00)
...
lp0: using parport0 (polling).
...
ppa: Version 2.03 (for Linux 2.2.x)
ppa: Found device at ID 6, Attempting to use EPP 32 bit
ppa: Communication established with ID 6 using EPP 32 bit
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
scsi1 : Iomega VPI0 (ppa) interface
scsi : 2 hosts.
Vendor: IOMEGA Model: ZIP 100 Rev: J.03
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi removable disk sda at scsi1, channel 0, id 6, lun 0
scsi : detected 1 SCSI disk total.
sda : READ CAPACITY failed.
sda : status = 0, message = 00, host = 0, driver = 28
sda : extended sense code = 2
sda : block size assumed to be 512 bytes, disk size 1GB.
sda: I/O error: dev 08:00, sector 0
unable to read partition table
...
ppdev: user-space parallel port driver
...
Also I should say that, when the root runs printtool, printtool does
find a printer at /dev/lp0 (but printing a test page or equivalent still
doesn't work).
PS: Thx a lot for putting so much time in this problem, Tim. I really
appreciate it.
PSS: Please concentrate on the printing-problem. The system-slow-problem
is of less importance.
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