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Re: [Gimp-print-devel] Canon PIXMA mp640 default media size
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From: Gernot H. <aik...@gm...> - 2017-02-16 09:08:46
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On Thu, Feb 16, 2017 at 5:59 PM, Thomas Tornblom <th...@ha...> wrote:
> Great, thanks for confirming this Gernot.
>
> Have you had any chance of looking into the root cause for this issue?
Hello Thomas,
Sorry for not getting back on this thread.
The immediate cause has been fixed in the latest source a few days
ago, if you can compile you should be fine.
The way of handling paper sizes will probably undergo some changes in
the near future to try and cater for different needs, and avoid such
issues as cropped up this time.
If you can test the current code that would be great.
Regards,
Gernot
> Cheers,
> Thomas
>
>
> Den 2017-02-07 kl. 13:56, skrev Gernot Hassenpflug:
>> On Mon, Feb 6, 2017 at 12:40 AM, Thomas Tornblom <th...@ha...> wrote:
>>> Given the recent discussion about issues with Canon printers and 5.2.12
>>> I tried downgrading to 5.2.11, but it appears to behave the same. It
>>> complains that there is no paper in the manual tray if I select A4, but
>>> works if I select Letter format, even though I've set the default media
>>> size to A4 and the cassette contains only A4.
>> /../
>>> Den 2017-02-03 kl. 14:02, skrev Thomas Tornblom:
>>>> Greetings.
>>>>
>>>> I have just compiled and installed gutenprint 5.2.12 on Solaris 11.3 and
>>>> I'm having a problem selecting the default paper size matching what is
>>>> in the tray.
>>>>
>>>> The printer is a Canon PIXMA MP640, and I use a4 media, but it seems
>>>> that something believes it is Letter.
>>>>
>>>> I have selected a4 as the default media size in cups, but if I try to
>>>> print using a4, the printer tries to use the manual feed tray. If I
>>>> select Letter then it will draw from the tray, which contains A4 media.
>>>>
>>>> As it works properly with a4 when printing from my Mac I assume there is
>>>> no problem in the printer end.
>>>>
>>>> I see nothing obviously wrong in the PPD, but it is a bit overwhelming
>>>> and I assume the problem lies there.
>>>>
>>>> Unfortunately the PPD on the Mac appears incompatible with the cups
>>>> version on the solaris system, so I can not do a trivial test using that.
>>>>
>>>> Comments?
>>
>> Hello Thomas,
>>
>> I could reproduce this bug in 5.2.12, and if I fix the return value
>> from the canon_size_type to what would be expected for A4 paper, then
>> the output of the printjob is correct.
>> However, for reasons unknown at this stage, the canon_size_type
>> function is reading the paper size to be the string 'Custom' (as
>> indicated when using STP_DEBUG=0x40 to debug the Canon backend), and
>> therefore returning 0x00.
>>
>> I have no idea at the moment what is causing the read value of the
>> papersize to always be 'Custom', but will be digging into that.
>>
>> For reference, the start and end of the function, in princt-canon.c:
>>
>> canon_size_type(const stp_vars_t *v, const canon_cap_t * caps)
>> {
>> const stp_papersize_t *pp = stp_get_papersize_by_size(stp_get_page_height(v),
>> stp_get_page_width(v));
>>
>> stp_deprintf(STP_DBG_CANON,"canon: entered canon_size_type\n");
>>
>> if (pp)
>> {
>> const char *name = pp->name;
>> stp_deprintf(STP_DBG_CANON,"canon: in canon_size_type is
>> pp->name: '%s'\n",name);
>>
>> /* used internally: do not translate */
>> /* built ins: Japanese driver notation */
>> if (!strcmp(name,"A5")) return 0x01;
>> if (!strcmp(name,"A4")) return 0x03;
>> if (!strcmp(name,"A3")) return 0x05;
>> if (!strcmp(name,"B5")) return 0x08;
>> if (!strcmp(name,"B4")) return 0x0a;
>> if (!strcmp(name,"Letter")) return 0x0d;
>> if (!strcmp(name,"Legal")) return 0x0f;
>> if (!strcmp(name,"Tabloid")) return 0x11;
>> /../
>>
>> /* custom */
>>
>> stp_deprintf(STP_DBG_CANON,"canon: Unknown paper size '%s' -
>> using custom\n",name);
>> } else {
>> stp_deprintf(STP_DBG_CANON,"canon: Couldn't look up paper size %dx%d - "
>> "using custom\n",stp_get_page_height(v), stp_get_page_width(v));
>> }
>> return 0;
>> }
>>
>> Regards,
>> Gernot Hassenpflug
>>
>>> --
>>> Real life: Thomas Törnblom Email: th...@ha...
>>> Snail mail: Banvallsvägen 14 Phone: +46 18 32 31 18
>>> S - 754 40 Uppsala, Sweden Mobile: +46 76 209 8320
>>>
>>>
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>
>
> --
> Real life: Thomas Törnblom Email: th...@ha...
> Snail mail: Banvallsvägen 14 Phone: +46 18 32 31 18
> S - 754 40 Uppsala, Sweden Mobile: +46 76 209 8320
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
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