Many random segfaults, I/O crashes, but no errors in memtest86+ and badblocks. Is it really hardware?
 

My desktop environment constantly crashes while i`m using firefox. Sometimes firefox crashes, and other times the whole X system crashes.

I was in ubuntu and checked the kern.log file, it was always something related to I/O error.

I tried to change to slackware to see the problem would persist. And now the samething happens but with this new message

traps: plugin-containe[2214] general protection ip:7ff8e126c317 sp:7ffc83449680 error:0 in ld-2.23.so[7ff8e1260000+25000]

and

traps: firefox[2218] general protection ip:7f77d759a317 sp:7ffccd4cae80 error:0 in ld-2.23.so[7f77d758e000+25000]


After that I tried to run memtest86+ but no error was found.
Same with badblocks, no bad blocks found.

What could be the problem?

Try temprarily disabling all addons by starting Firefox from a terminal Window withIf it fixes the problem, you can find out which addon is causing problems by trial & error methods.

Other than it may have something to do with Firefox, there is not enough information providided to be able to give a better answer, than the one you have already got (post #2).

As there could be a number of reasons for your problem(s).

Could you post your kernel log (the whole log) ?

Try attaching your kernel log in a text file, to your next post;

Run the following command at a terminal window (NO need to be root);

Then attach the resulting text file, in your 'home' folder.

ld.so is the Linux loader, which is responsible for loading applications into user memory. This message suggests to me that there is a bad (or, incompatible) plug-in for your Firefox. I suggest completely de-installing Firefox along with all of its add-ons, then reinstall it.