[sane-devel] UMAX Astra 2200sc: slow calibration

Tony van der Hoff tony at vanderhoff.org
Sun Jul 17 20:09:52 UTC 2005 

Hi Oliver,

Oliver Rauch <Oliver.Rauch at Rauch-Domain.DE> wrote in message
<1121619548.2134.6.camel at Babylon7>

> Hello.
> 
> Is your scanner connected via scsi or via usb?
> 
This is via SCSI.

> I suggest to disable "quality calibration".
> Then the calibration is done inside the scanner
> without the help of the driver. When there is no
> dust on the calibration area then there is no
> quality problem with "quality calibration" disabled.
> 
OK, how do I do that? There doesn't seem to be a relevant entry in
umax.conf, and I think I've tried most options there.

> For some people the quality calibration with the 2200SU
> seems to work, for most people it does not work.
> But I was not able to find out when it does work
> and when it does not work.
> 
> Please can you tell me which firmeare version your scanner
> uses!
> 
It reports V2.2.

> Best regards
> Oliver
> 
> Am Son, 2005-07-17 um 17.07 schrieb Tony van der Hoff:
> > Hi,
> > 
> > I'm able to obtain a scan from my Astra 2200, but it is taking in excess
of
> > 30 minutes to do so, the vast majority of this time reading 64 lines of
> > shading data at 2 lines/minute.
> > 
> > I've modified the debug output to include time information, and the
relevant
> > extract from the log is as follows:
> > 
> > 14:52:13 [umax] scanner ready
> > 14:52:13 [umax] driver is doing calibration
> > 14:52:13 [umax] request sense call is disabled
> > 14:52:13 [umax] scanner sends 64 lines with 15300 pixels and 2
bytes/pixel
> > 14:52:13 [umax] calculating average value for 16 bit shading data (low
byte
> > first)!
> > 14:52:13 [umax] read_shading_data
> > 14:52:13 [umax] umax_scsi_cmd: calling sanei_scsi_cmd
> > 14:52:13 [sanei_scsi] sanei_scsi_cmd
> > 14:52:13 [sanei_scsi] scsi_req_enter: entered 0x80b63c8
> > 14:52:13 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> act: id=17 blen=30600 t_o/elap=120000/13ms sgat=0 op=0x28
> > 14:52:13 [sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 2
> > 14:52:13 [sanei_scsi] sanei_scsi_req_wait: waiting for 0x80b63c8
> > 14:52:13 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> rcv: id=17 blen=30600 dur=60276ms sgat=0 op=0x28
> > 14:53:13 [sanei_scsi] sanei_scsi_req_wait: read 64 bytes
> > 14:53:13 [umax] 16 bit shading-line 1 read
> > 14:53:13 [umax] read_shading_data
> > 14:53:13 [umax] umax_scsi_cmd: calling sanei_scsi_cmd
> > 14:53:13 [sanei_scsi] sanei_scsi_cmd
> > 14:53:13 [sanei_scsi] scsi_req_enter: entered 0x80b63c8
> > 14:53:13 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> act: id=18 blen=30600 t_o/elap=120000/14ms sgat=0 op=0x28
> > 14:53:13 [sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 2
> > 14:53:13 [sanei_scsi] sanei_scsi_req_wait: waiting for 0x80b63c8
> > 14:53:13 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> rcv: id=18 blen=30600 dur=24ms sgat=0 op=0x28
> > 14:53:13 [sanei_scsi] sanei_scsi_req_wait: read 64 bytes
> > 14:53:13 [umax] 16 bit shading-line 2 read
> > 14:53:13 [umax] read_shading_data
> > 14:53:13 [umax] umax_scsi_cmd: calling sanei_scsi_cmd
> > 14:53:13 [sanei_scsi] sanei_scsi_cmd
> > 14:53:13 [sanei_scsi] scsi_req_enter: entered 0x80b63c8
> > 14:53:13 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> act: id=19 blen=30600 t_o/elap=120000/12ms sgat=0 op=0x28
> > 14:53:13 [sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 2
> > 14:53:13 [sanei_scsi] sanei_scsi_req_wait: waiting for 0x80b63c8
> > 14:53:13 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > 
> > and so on, until
> > 
> > 15:24:23 [sanei_scsi] sanei_scsi_req_wait: read 64 bytes
> > 15:24:23 [umax] 16 bit shading-line 63 read
> > 15:24:23 [umax] read_shading_data
> > 15:24:23 [umax] umax_scsi_cmd: calling sanei_scsi_cmd
> > 15:24:23 [sanei_scsi] sanei_scsi_cmd
> > 15:24:23 [sanei_scsi] scsi_req_enter: entered 0x80b63c8
> > 15:24:23 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> act: id=80 blen=30600 t_o/elap=120000/13ms sgat=0 op=0x28
> > 15:24:23 [sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 2
> > 15:24:23 [sanei_scsi] sanei_scsi_req_wait: waiting for 0x80b63c8
> > 15:24:23 [sanei_scsi] sanei_scsi.issue: 0x80b63c8
> > dev_max(currently)=32 max_active_device=5 (origin 1)
> >  def_reserved_size=32768
> >  >>> device=sg3 scsi1 chan=0 id=5 lun=0   em=0 sg_tablesize=128 excl=1
> >    FD(1): timeout=120000ms bufflen=34304 (res)sgat=2 low_dma=0
> >    cmd_q=1 f_packid=0 k_orphan=0 closed=0
> >      rb>> rcv: id=80 blen=30600 dur=23ms sgat=0 op=0x28
> > 15:24:23 [sanei_scsi] sanei_scsi_req_wait: read 64 bytes
> > 15:24:23 [umax] 16 bit shading-line 64 read
> > 15:24:23 [umax] send_shading_data
> > 
> > After that it rapidly performs the scan, and exits.
> > 
> > Despite my best efforts, I don't understand the driver at this level, so
is
> > there anyone out there who can make some suggestions on my next step in
> > debugging this issue, please?
> > 
> > Is the fact that it's taking almost exactly 60 seclonds to read two
lines of
> > data significant?
> > 
> > FWIW, I'm running linux kernel 2.6.8, and have similar results with
2.6.11
> > 
> > Cheers,
> > 
> > -- 
> > Tony van der Hoff         | mailto:tony at vanderhoff.org
> > Buckinghamshire, England
> 
> 

-- 
Tony van der Hoff        | mailto:tony at vanderhoff.org
Buckinghamshire, England

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