[sane-devel] SuSE 10.0 gets "Out of memory" for Epson 4870 (GT-X700)

[Kees Lemmens]

Hi,

Are you sure you have swap memory enabled ? These problems often occur on 
systems without swap enabled.

Check with "free" : if the Swap: line reports zero you have a problem ;-)
dut8b:~ 252 % free
             total       used       free     shared    buffers     cached
Mem:        904628     747696     156932          0      83808     424348
-/+ buffers/cache:     239540     665088
Swap:      1036184      32104    1004080

Fix :

- Check with "fdisk -l /dev/hda" (or hdb ...) if you already have a
  swapspace (let's say it is hda4 for now). 

- Then check with "swapon /dev/hda4" if you can enable it.

- If you get a message like "invalid swap signature" try to use
  "mkswap /dev/hda4" on that partition and retry.

- If free reports swap then check if it is already set in
  the /etc/fstab :

  /dev/hda4               none            swap defaults   0 0

Success,
Kees

On Saturday 22 October 2005 14:55, Roger Price wrote:
> Dear List, For a year my Epson Perfection 4870 Photo ran well with sane
> 1.0.14 and xsane 0.94 on SuSE Linux 8.1.  I recently upgraded to SuSE
> Linux OSS 10.0 with sane 1.0.15, xsane 0.97.  I use the epson backend.
> The kernel is 2.6.13. The scanner is USB connected and recognized as a
> GT-X700.  The PC has 512 Mbytes of memory.
>
>   sane-find-scanner reports
>
> USB scanner (vendor=0x04b8 [EPSON], product=0x0128 [EPSON Scanner]) at
> libusb:001:003
>
> At first the upgraded installation ran well: I managed to scan 20
> postcards at 1200 dpi before getting the message
>
>    "Failed to start scanner: Out of memory".
>
> Restarting sane did not solve the problem.  Neither did logging out of
> the user account and logging in again.
>
> I ran "shutdown -r now" as root and tried again.  This time I managed
> to scan 8 postcards at 1200 dpi before getting the message "Failed to
> start scanner: Out of memory".
>
> I repeated "shutdown -r now" and tried again, but now I cannot even
> scan the first postcard.
>
> I set "export SANE_DEBUG_EPSON=255" and obtained the following trace
> from the moment at which I clicked on "Scan" to the moment the "Out of
> memory" window appeared:
>
> [epson] sane_get_parameters()
> [epson] Preview = 0
> [epson] Resolution = 1200
> [epson] get para 0x81b8c98 0x81b9388 tlx 11.270081 tly 3.646194 brx
> 158.444199 bry 96.458710 [mm] [epson] params.format = 1
> [epson] params.last_frame = 1
> [epson] params.bytes_per_line = 41712
> [epson] params.pixels_per_line = 6952
> [epson] params.lines = 4385
> [epson] params.depth = 16
> [epson] sane_start()
> [epson] open_scanner()
> [epson] scanner is already open: fd = 0
> [epson] sane_start: Setting data format to 16 bits
> [epson] send buf, size = 2
> [epson] buf[0] 1b .
> [epson] buf[1] 44 D
> [epson] receive buf, expected = 1, got = 1
> [epson] buf[0] 06 .
> [epson] send buf, size = 1
>
> ...many similar send-receive messages...
>
> [epson] sane_start: set_color_correction( s, 0x80 )
>
> ...many more send-receive messages...
>
> [epson] receive buf, expected = 1, got = 1
> [epson] buf[0] 06 .
> [epson] sane_get_parameters()
> [epson] Preview = 0
> [epson] Resolution = 1200
> [epson] get para 0x81b8c98 0x81b9388 tlx 11.270081 tly 3.646194 brx
> 158.444199 bry 96.458710 [mm] [epson] params.format = 1
> [epson] params.last_frame = 1
> [epson] params.bytes_per_line = 41712
> [epson] params.pixels_per_line = 6952
> [epson] params.lines = 4385
> [epson] params.depth = 16
> [epson] set_scan_area: 0x81b8c98 532 172 6952 4385
> [epson] send buf, size = 2
> [epson] buf[0] 1b .
> [epson] buf[1] 41 A
> [epson] receive buf, expected = 1, got = 1
> [epson] buf[0] 06 .
> [epson] send buf, size = 8
> [epson] buf[0] 14 .
> [epson] buf[1] 02 .
> [epson] buf[2] ac .
> [epson] buf[3] 00 .
> [epson] buf[4] 28 (
> [epson] buf[5] 1b .
> [epson] buf[6] 21 !
> [epson] buf[7] 11 .
> [epson] receive buf, expected = 1, got = 1
> [epson] buf[0] 06 .
> [epson] out of memory (line 4860)
> [epson] sane_get_parameters()
> [epson] Preview = 0
> [epson] Resolution = 1200
> [epson] get para 0x81b8c98 0x81b9388 tlx 11.270081 tly 3.646194 brx
> 158.444199 bry 96.458710 [mm] [epson] params.format = 1
> [epson] params.last_frame = 1
> [epson] params.bytes_per_line = 41712
> [epson] params.pixels_per_line = 6952
> [epson] params.lines = 4385
> [epson] params.depth = 16
>
> KDE's Kooka is still able to scan a postcard at 1200 dpi, but I would
> prefer to use xsane which gives precise control of the gamma.  Although
> the upgrade now includes GIMP (version gimp-2.2.0) which was not
> present previously, I don't use GIMP, so this is probably not the
> problem.
>
> Any suggestions or hints would be much appreciated.
>
> Best Regards,
> Roger