Opened 2 years ago

Closed 2 years ago

Last modified 2 years ago

#22406 closed defect (duplicate)

Tor hangs when I try to access guardian.com Cartoons with 5 tabs open (cartoon page + 4 cartoons)

Reported by: mwolfe Owned by: tbb-team
Priority: Medium Milestone:
Component: Applications/Tor Browser Version:
Severity: Normal Keywords: tbb-crash
Cc: Actual Points:
Parent ID: Points:
Reviewer: Sponsor:

Description

I have an Apple MacBook Pro made in 2010. This is model MacBookPro6,2

This model has 2 graphics processors, the Intel CPU (which works) and an NVIDIA GeForceTeslaGL card (which is a problem). The NVIDIA card on MacBooks from 2010 to 2012 either fails with age, or has become unable to process newer graphics, and causes the Macbook to crash. I downloaded an app that disables the NVIDIA graphics card, and the Macbook does not crash, but Torbrowser crashes. I sent in several crash logs, but no one could replicate the result (one must be running a Macbook pro from 2010 - 2012).

The chip seems to be getting worse. And Tor crashes if the NVIDIA chip is disabled.

This happens with certain sites (like the Guardian cartoon pages) if I open multiple tabs, and sometimes with just one or two tabs open.

I am running Capitan 10.11.6 with 8 GB of memory.

Torbrowser is 6.5.2 (based on Mozilla Firefox 45.9.0)

Child Tickets

Attachments (6)

openfilesandportswhenhung.rtf (9.9 KB) - added by mwolfe 2 years ago.
sampleoftorafterhang.rtf (76.0 KB) - added by mwolfe 2 years ago.
torcrash280517.rtf (70.8 KB) - added by mwolfe 2 years ago.
torhang2-290517.png (39.4 KB) - added by mwolfe 2 years ago.
torhang200517.png (145.5 KB) - added by mwolfe 2 years ago.
torid.png (104.9 KB) - added by mwolfe 2 years ago.

Download all attachments as: .zip

Change History (26)

Changed 2 years ago by mwolfe

Changed 2 years ago by mwolfe

Attachment: sampleoftorafterhang.rtf added

comment:1 Changed 2 years ago by nickm

Component: - Select a componentApplications/Tor Browser
Owner: set to tbb-team

comment:2 Changed 2 years ago by gk

Keywords: tbb-crash added
Status: newneeds_information

I wonder what we can do to help you. How frequent are those crashes? Would you be willing to run a special debug build if we gave you instructions on how to capture useful information for us? So far it seems you are the only one coming to us with this kind of crashes. But maybe that does not mean anything and other users just don't report them and think Tor Browser is broken (which would be bad)...

comment:3 Changed 2 years ago by gk

Oh, regarding the crashes when you disable the NVIDIA chip, can you reproduce those reliably? We might be able to help you when we look at that issue first? Does a normal, unmodified Firefox (ESR 45) crash in this case as well?

Last edited 2 years ago by gk (previous) (diff)

Changed 2 years ago by mwolfe

Attachment: torcrash280517.rtf added

comment:4 Changed 2 years ago by mwolfe

My Macbook was crashing occasionally when watching videos in the original OS, Snow Leopard. I finally upgraded to El Capitan, and it began crashing several times a day, so I checked, and found that the NVIDIA graphics card was the problem, all my crashes say 'graphics panic'. The solution was to install gfxCardStatus that blocks the NVIDIA discrete graphics and uses the Intel CPU integrated graphics.

gfxCardStatus shows whether the Macbook is using integrated or discrete graphics. When I start Safari, the Macbook remains in integrated graphics mode, but some graphics cause Safari to switch to discrete graphics and crash the Macbook. Torbrowser starts in discrete graphics mode, and, if I don't immediately quit, will soon crash the Macbook with a 'graphics panic'.

With gfxCardStatus installed and set to block discrete graphics, Torbrowser often crashes. It depends on the site, the complexity of the graphics, and how many taps I have open.

When reading a news site, I keep the home page in the left-most tab, and the articles I'm reading in other tabs. Likewise when I'm checking the comics for the day. If I open enough tabs, Torbrower crashes.

If running a debug version might help, I'd be happy to do it.

I think there must be a few others running older Macbooks and Torbrowser.

I don't have a copy of Firefox without Torbutton installed. If I don't care who knows what I'm looking at (or who's making comments to articles with which I think it might be dangerous to be associated), I use Safari.

Again, if you don't have an older Macbook, I understand Macbooks made after 2012 don't have the problem and would not be able to reproduce my crashes.

You might be able to reproduce my crashes if you had gfxCardStatus installed to prevent Torbrowser from accessing the discrete graphics chip, but I'm not sure. I just know I have an older Macbook with a problem, a kludge I use to get around the problem, and not enough cash to replace the Macbook.

Anything I can do to help the Torproject, I'd be very happy to try.

comment:5 Changed 2 years ago by gk

Okay, thanks. The first thing you could do is testing whether the current alpha release, 7.0a4, solves the problem for you. It is based on ESR52 and we are about to release Tor Browser 7.0 with that new ESR series. You can find bundles on https://dist.torproject.org/torbrowser/7.0a4/.

In case you hit a Mozilla bug which is solved in 7.0a4, then we are good. If the crashing continues let us know. In that case I'll create a debug build for you with instructions on how to use it to help us better understand and hopefully solve your problems.

Changed 2 years ago by mwolfe

Attachment: torhang2-290517.png added

Changed 2 years ago by mwolfe

Attachment: torhang200517.png added

Changed 2 years ago by mwolfe

Attachment: torid.png added

comment:6 Changed 2 years ago by mwolfe

I downloaded the latest alpha version 7.0a4 and 'installed' it by dragging it into my Applications folder. I opened Guardian Cartoon, then clicked on one cartoon, and Torbrowser hung (see torhang picture, 'Not responding' and this lasted one hour before I killed the process). I tried to go back to my old Tor version, but I only get an error 'Tor could not start.'

So I am accessing trac.torproject.org with 7.0a4, which has no trouble with the torproject site.

comment:7 in reply to:  6 Changed 2 years ago by gk

Replying to mwolfe:

I downloaded the latest alpha version 7.0a4 and 'installed' it by dragging it into my Applications folder. I opened Guardian Cartoon, then clicked on one cartoon, and Torbrowser hung (see torhang picture, 'Not responding' and this lasted one hour before I killed the process).

That might be bad luck on your side. I suspect you actually hit a NoScript bug (#22362).

I tried to go back to my old Tor version, but I only get an error 'Tor could not start.'

Hm. What did you do? Just installing Tor Browser 6.5.2 over the alpha in your /Applications directory? If you still experience that problem could you give us some feedback on what is going on on your system by following comment:11:ticket:20300?

So I am accessing trac.torproject.org with 7.0a4, which has no trouble with the torproject site.

That's expected. So, we'll work on finishing up Tor Browser 7.0 which will have a fix for #22362. Then you can test whether that one is indeed still crashing. And if so I'll provide you with a debug build + instructions for how do use it.

comment:8 Changed 2 years ago by mwolfe

When I try to read comics (gocomics.com and comickingdom.com) the old Torbrowser crashed if I had my display set to default resolution and opened three or four tabs. So I set my default to a rather low pixel rate, down to 1024 x 768, and I could open three of four tabs, but no more.

Now at default resolution (many more pixels) I can open 7 or 8 tabs without a crash. So the alpha seems to have fixed the basic Torbrowser crash from prohibiting discrete graphics. Many thanks for all your help.

I asked what I could do about the graphics chip. The answer was to spend $300 and send off my computer for a couple of weeks, and, since it's 7 years old, it's not clear if it's worth putting in another $300 when more things might go wrong. Plus I'd have a hard time giving up my computer for two weeks.

So many thanks for what seems to be a fix (except for the Guardian website).

comment:9 Changed 2 years ago by mwolfe

Since I upgraded to the alpha Torbrowser (7.0a4), no more crashes. A few hangs, where the Apple wheel keeps spinning until I force Torbrowser to quit, especially on the Guardian Cartoons website.

So the alpha is a big improvement for me. Many thanks.

Any idea what I can do about the hangs?

comment:11 in reply to:  9 Changed 2 years ago by gk

Replying to mwolfe:

Since I upgraded to the alpha Torbrowser (7.0a4), no more crashes. A few hangs, where the Apple wheel keeps spinning until I force Torbrowser to quit, especially on the Guardian Cartoons website.

So the alpha is a big improvement for me. Many thanks.

Any idea what I can do about the hangs?

They should be fixed with 7.0.1. Can you confirm that?

comment:12 Changed 2 years ago by mwolfe

I have 7 tabs open with 7 Guardian cartoons, and no crash. So you seem to have fixed that problem. Many thanks.

comment:13 Changed 2 years ago by mwolfe

Sorry. The Guardian didn't crash Tor, it just hung it. I let the Mac spinning wheel keep spinning for an hour before I killed Tor, and haven't been back to the Guardian cartoon page until today. Anyway, it no longer hangs.

comment:14 in reply to:  13 Changed 2 years ago by gk

Replying to mwolfe:

Sorry. The Guardian didn't crash Tor, it just hung it. I let the Mac spinning wheel keep spinning for an hour before I killed Tor, and haven't been back to the Guardian cartoon page until today. Anyway, it no longer hangs.

Thanks. What about the other weird crashes you reported before? Did you experience any of those after switching to Tor Browser 7?

comment:15 Changed 2 years ago by mwolfe

The basic crash (I sent lots of logs) was when I opened several tabs, and Tor would crash with an error log that is displayed on the screen if I'm in OSX. I also get the crash in bootcamp, but I have no idea where Windows hides the crash logs.

I haven't had the crash problem since I upgraded to 7.5a1, or the hang. So far.

My OSX crashed when I forgot to run the app that blocks the NVIDIA chip from being used.

But I have a new problem: I read the Independent (www dot independent dot co dot uk), and Tor now blocks all the comments. This should not be particular to my ancient Mac. When I comment, I don't want them to know who I am or where I am, so I don't read The Indpendent except via Tor, and I miss the comments.

comment:16 Changed 2 years ago by gk

Resolution: duplicate
Status: needs_informationclosed

Not sure about your problem with the Independent. If they block Tor on purpose in that case there is probably not much we can do. But glad that your crashes are gone! Marking this as duplicate of #22362.

comment:17 Changed 2 years ago by mwolfe

I could access all the Independent comments in Tor7.4 and Tor6, but not in Tor7.5, so it's something about Tor7.5 that refuses the comments for some reason.

Of course, Tor6 and Tor7.4 had other problems, but at least I could see the comments.

comment:18 in reply to:  17 Changed 2 years ago by gk

Replying to mwolfe:

I could access all the Independent comments in Tor7.4 and Tor6, but not in Tor7.5, so it's something about Tor7.5 that refuses the comments for some reason.

Of course, Tor6 and Tor7.4 had other problems, but at least I could see the comments.

That's due to #21323. The problem is that the news site is loaded over a secure connection (you should see an HTTPS in your URL bar) while the comments are not which is usually blocked in browsers (and Tor Browser now as well) as it imposes security risks. It seems if you are not using the https-version of that website then the comments are working fine in Tor Browser 7.

comment:19 Changed 2 years ago by cypherpunks

What about your previous open tickets https://trac.torproject.org/projects/tor/query?status=!closed&reporter=mwolfe?

Still no comments with MCB disabled, only this

09:04:08.005 XML Parsing Error: syntax error
Location: https://www.independent.co.uk/arts-entertainment/music/reviews/dot-to-dot-festival-manchester-review-a-surreal-urban-celebration-of-music-10274039.html
Line Number 1, Column 1: 1 dot-to-dot-festival-manchester-review-a-surreal-urban-celebration-of-music-10274039.html:1:1

comment:20 Changed 2 years ago by mwolfe

Thanks. When I clicked the lock, I could order Tor to let me see the comments, so I am once again able to see comments on the Independent.

On my other submissions, that was with older versions of Tor browser. Crashes were inexplicable (to me) except they usually came when I had multiple tabs open. So I was never sure which tab caused the crash, or if there was some memory overload from multiple tabs. Since I mostly check news and cartoon sites that change every day, it was unpredictable what would crash Tor.

I haven't had any major problems since I started using Tor7.5a1, just the sudden inability to see comments on a site where the article had an SSL version (as well as an unencrypted version) but the comments had only an unencrypted version. And now I know how to read the comments, so many thanks.

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