From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DKIM-Filter: OpenDKIM Filter v2.11.0 stuffed.shaftnet.org 11PEseBo1589794 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=shaftnet.org; s=default; t=1614264880; bh=Wvbdmu9YNtO+ffsOQL9UuHmChPHme64VuUPBJjyEBcI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=J2g6FXxeUf12emlIG9oYvlC8tl3XoEpiVo0uAfHz/D+jKtdVW9nJw5oWbEyiVg70A V7ggqaKaIjNjegMSgEEDfmkv1p2DXMnHSIobLy86YU4WeIJVXiqqvwzcaM+rIv3jyy x4TadJpXLxFkbAxxYfBi43zC7MpyqU5BZXaLJN1w= Date: Thu, 25 Feb 2021 09:54:39 -0500 From: Solomon Peachy Message-ID: References: <12af8541-3113-341d-6b7f-d7393203368f@gmail.com> <949aea1f-a0f0-df47-1538-d7782f5350ab@redhat.com> <66430674-dc47-4a81-406b-aedefc065a37@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="/IbP4U1VN2ntrUMo" Content-Disposition: inline In-Reply-To: Subject: Re: [Printing-architecture] Automatic printer setup with Printer Applications List-Id: Printing architecture under linux List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Zdenek Dohnal Cc: Open Printing , Jai Luthra , Till Kamppeter --/IbP4U1VN2ntrUMo Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Feb 25, 2021 at 09:28:47AM +0100, Zdenek Dohnal wrote: > Solomon, I'm sorry if it is an obvious fact, but I don't know it - would > you mind me asking why IEEE1284 IDs aren't used so much in drivers? I can't comment on manufacturer-supplied/supported drivers, but speaking=20 of my own experience with Gutenprint we can't use what we don't know=20 about. The tooling that could take advantage of those IDs to=20 provide automagic printer setup didn't exist until relatively [1]=20 recently, and by then it was a bit too late.. And much like we've seen multiple distinct models with identical USB=20 VID/PIDs, I've also seen distinct models that share identical IEEE1284=20 IDs. [2] And then there's the iManufacturer/iModel/iSerial strings that=20 may or may not match what's in the 1284 data or what's silkscreened onto=20 the printer itself.. =2E..Like everything else involving printing, it's a complete mess. (Of the stuff in Gutenprint, about a quarter of the IEEE1284 IDs, and=20 all of the USB VID/PIDs, were added by myself.) [1] ie about a decade ago.=20 [2] They are in the same family, but the PDL is barely incompatible.. - Solomon --=20 Solomon Peachy pizza at shaftnet dot org (email&xmpp) @pizza:shaftnet dot org (matrix) High Springs, FL speachy (freenode) --/IbP4U1VN2ntrUMo Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE3H5Sx9DyiyB5hnENrGLLO/XVulEFAmA3ui0ACgkQrGLLO/XV ulEjfBAAopt+ehDK+rNSuL2n1R4myUy/xt6q1CK9B+Sn8mgVhT6toTOEOquPGE5w sfmvfEAEQNeMW69vXeJD2Mz7mJYwWpqVjhO2hwDjthR1DabS0Te4UlEDxjoMO07I NrvS7nkIv6aaRVzeJr8V+FE6O3MESRR215yQycuoa0rSM16oR9yAe2T/zpvFuU+i dDKP2YY+bveKKKoVuZIgjkz1pKUsdTVDUiLlisPk4u1rYrhCUMOVqKWTAwFwhy87 DImrfZAiPH+QX2I4lwcFylLYdD/1pf5o9s10nsRolHYsZmm1lb7Li1hL+n4Z23rQ t4Fz5O7HO3f6ceK+Wfya39LTqy175leyO1pcC1XKCj1taLrwhhHySpWld8g3iEm2 UB+saQJu7Oa21xP7ATqwdZtNf6NeMck1Ed/TamQoRxyVN4PA5Q9z5l/AaMtVvNnS fNqW7EB1zIzIX1l8pRn47S4mmof1RqIYWvrhUK4cR/bH3F0kokDXaeE9A6jAmMvV sJSGPzwltMjn0a0BT/k7JlyZq6HipZ3UceOeUa63AviHshEmkvwCvL1nLEKp9Kmh eeWlaKnEij4OFYm82xBV9+w9AUIKltkG3C+i4UKy9Jou6n6EdjVYGqP1nrxCwFLP PkabQDdLFlelqy+S5Oui5cbgIYv+g7EdS6a8hNUVOCdv9qdulZc= =32Lz -----END PGP SIGNATURE----- --/IbP4U1VN2ntrUMo--