I've used this for years and recently installed and used it on my new
21.3 Edge laptop.

I ordered an external CD/DVD drive with the laptop so I thought I'd
better try it to make sure it was working. Nemo could see the files on a
test DVD, but a pdf wouldn't open. There was no response on
double-clicking the file. I couldn't work out how Nemo could see the
DVD's contents, but qpdfview couldn't open the file. The I tried
Document Viewer and that opened the pdf without problem. So I tried a
pdf on the desktop and qpdfview failed with that too. I tried opening it
from the menu without success. It looked like it had become corrupt in
some way, but I can't remember ever seeing this before in over 7 years
of using Mint.

After uninstalling qpdfview, rebooting (an error message appeared that
some of the qpdfview files were still open, but I continued the reboot
anyway), and reinstalling, qpdfview now opens without problem.

--
Jeff

Jeff Layman wrote:
> reinstalling, qpdfview now opens without problem.

Must've been a 'bad install'. That isn't the default viewer, so i
must've been 'secondarily' installed.

'Of course' it uses Qt liby/s for its interface, which is not 'native'
to Cinnamon, so it needs Qt 'baggage' for a successful install.

'Not that there is anything wrong w/ that' as some people like to say.

--
Mike Easter

On 22/03/2024 17:40, Mike Easter wrote:
> Jeff Layman wrote:
>> reinstalling, qpdfview now opens without problem.
>
> Must've been a 'bad install'. That isn't the default viewer, so i
> must've been 'secondarily' installed.
>
> 'Of course' it uses Qt liby/s for its interface, which is not 'native'
> to Cinnamon, so it needs Qt 'baggage' for a successful install.
>
> 'Not that there is anything wrong w/ that' as some people like to say.

I've had some other issues such as being unable to mount a 1TB drive and
the panel behaving strangely. I'm wondering if the 21.3 Edge is
responsible, as I've been running "straight" 21.3 for some time on
another laptop without problem.

At present there doesn't seem to be any news about an Edge update, but
if I keep getting issues I might try dropping down from the 6.5.0.26
kernel to .25 or even lower.

--
Jeff

On 3/22/24 02:15 PM, Jeff Layman wrote:
> On 22/03/2024 17:40, Mike Easter wrote:
>> Jeff Layman wrote:
>>> reinstalling, qpdfview now opens without problem.
>>
>> Must've been a 'bad install'.  That isn't the default viewer, so i
>> must've been 'secondarily' installed.
>>
>> 'Of course' it uses Qt liby/s for its interface, which is not 'native'
>> to Cinnamon, so it needs  Qt 'baggage' for a successful install.
>>
>> 'Not that there is anything wrong w/ that' as some people like to say.
>
> I've had some other issues such as being unable to mount a 1TB drive and the panel behaving
> strangely. I'm wondering if the 21.3 Edge is responsible, as I've been running "straight" 21.3 for
> some time on another laptop without problem.
>
> At present there doesn't seem to be any news about an Edge update, but if I keep getting issues I
> might try dropping down from the 6.5.0.26 kernel to .25 or even lower.
>
I had to jump from 5-15 to 6.5.0-26 to fix an issue with I guess my hardware. As of the 5.15.0-100
kernel, every shutdown streamed errors on the screen for a second before power off. Really fast, I
recorded it with my phone to catch. Corrupt kernel. Whoever I reported it to seemed to think
hardware. But I think he gave up on me, he was getting in over my head in details. But his last
suggestion is load the 6.8 kernel. I couldn't find any easy way to do it. I gave up then too.

--
Linux Mint 21.3 Cinnamon 6.0.4 Kernel 6.5.0-26-generic
Al