gpg: failed to create temporary file '/var/lib/lurker/.#lk0x585d9100.hantslug.org.uk.3010': Permission denied
gpg: keyblock resource '/var/lib/lurker/pubring.gpg': Permission denied
gpg: Signature made Wed Nov  6 17:21:22 2019 GMT
gpg:                using RSA key 9B00C02592448A31EF971B350F3EE001F02A3E20
gpg: Can't check signature: No public key
On Wed, 6 Nov 2019 16:06:44 +0000
Owain via Hampshire <hampshire@???> wrote:
Hello Owain,
>I am so regretting accepting a free HP Officejet printer.  The software 
>works ok, but for me part of the open source ethic is being able to use 
>non OEM cartridges 
I use non-HP ink cartridges in my OfficeJet without issues.
I know there was a time when HP silently blocked the possibility of using
non-HP cartridges, but that decision was soon reversed after a *massive*
outcry (no doubt followed by a downturn in sales) from pretty much all
quarters.  All this was in late 2016, BTW.  Maybe a firmware update is
in order.
Despite the reversal, HP did not apologise for the block.  Nor did they
say that they wouldn't do it again.  Therefore, once you've performed a
firmware update (if applicable) I suggest you prevent your printer from
auto-updating firmware in future.
TBH, the whole debacle seriously knocked my confidence(1) in HP.  When my
current printer dies.  I may well buy from another supplier with better
open-source credentials.
(1)  Possibly too strong a word.  HP's Linux/open-source support is
patchy, at best.
-- 
 Regards  _
         / )           "The blindingly obvious is
        / _)rad        never immediately apparent"
I can't do a thing 'cause I can't relax
Independence Day - Comsat Angels