If you always run out of votes on days when you are actively using the site, then you are voting enough.
The converse likely does not hold, though. That is, you may still be voting enough, depending on how much you prefer to vote and what criteria you apply (and where you set the bar for each criterion).
Suppose a post's score should reflect its value, and there are a whole bunch of people voting. If everyone votes on the same number of posts and with the same thresholds as to what to vote for, then post scores will not reflect this. Instead, they'll reflect whatever that threshold is.
In contrast, if some people only vote for the very best imaginable posts, and some people vote for anything that's pretty okay, and other people fall everywhere in between, then the distribution of votes will generally reflect the value (really, people's beliefs about the value) of posts.
This is an informal argument that could be supported or refuted with the help of quantitative evidence, though one would have to solve the problem of defining "value" for the purpose of the study.
I say "value" instead of "quality" because votes track interest as much as quality.
But like, suppose I see four posts, A, B, C, and D, and I think A, B, and C, are good enough to upvote, so I upvote them.
Someone else, say Jorge, sees them and decides A and B are good enough to upvote.
You see them and decide A is good enough to upvote.
If the main difference between our judgments is where to set the threshold for upvoting, then the effect is that post scores approximate the quality of the posts pretty well, and much better than if we all voted with the same threshold.
Votes that are simply poorly considered worsen the situation, but I don't think they change this analysis.
Of course, not everyone sees all the same posts.
But I think how much people vote is actually something that should vary across the user base.
With that said, I do think we don't vote enough on Ask Ubuntu, both in terms of how many votes the site would benefit from being cast, and by comparison to many other Stack Exchange sites. On days when I am active on the site, I try to use all my votes -- though I don't do so if I can't find posts that are worth voting on, and I don't usually log in to the site to browse and vote on things on days when I would not otherwise use the site very much.
Can good alt text be written for
these screenshots? I didn't think of good descriptions, so I didn't add any as I was improving the edit that, among other things, inlined the images.
I want to undelete
this question and ask the OP if they are actually currently using or attempting to use Ubuntu.
Questions about operating systems that aren't Ubuntu or official derivatives of Ubuntu are often good cases for 20k deletion but I don't think this one was. I agree with (and was part of) the closure but not this quick of a deletion.
@Zanna Why do you feel you should be voting more?
@Zanna Is this because you don't see enough posts that you think are worth voting on?