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Multiple errors, common problem

Hello

 

I have a mid 2010 iMac, running OS X Yosemite 10.10.5 with 16GB RAM, 1TB HDD

 

I have 4 symptoms that now seem to arise together from time to time. Timeline may be connected to the latest security update in July.

 

i) Google Chrome crashes out on startup by failing to load extensions and showing broken tabs, or new tabs fail.

Unistalling and reinstalling latest version of Chrome (even Chrome Canary made no difference)

ii)  terminal fails to load showing [forkpty: Resource temporarily unavailable] [Could not create a new process and open a pseudo-tty.])

iii) dmg's cannot install, with system declaring "No such file or directory".

iv) About this Mac pane loads empty or populates very slowly.

 

Symptoms usually disappear with restart, and then return intermittently.

 

Scans by Avira, Malwarebytes and Sophos do not show any malware.

 

System disk and permissions do not show anything significant. Internet searches imply the problems appear in more recent OS X releases too.

 

Any ideas, what to check next.

 

Thanks

First, get rid of Avira and Sophos entirely. They are worthless and will cause more problems than they solve. Malwarebytes is fine.

Download etrecheck, run it, and post the resulting report here for review.

Possible Fixes for Lion to Yosemite Installations

 

You should try each, one at a time, then test to see if the problem is fixed before going on to the next.

 

     Be sure to backup your files before proceeding if possible.

 

  1. Resetting your Mac's PRAM and NVRAM
  2. Intel-based Macs: Resetting the System Management Controller (SMC)
  3. Start the computer in Safe Mode, then restart normally. This is slower than a standard startup.
  4. Repair the disk by booting the from the Recovery HD. Immediately after the chime hold down the Command and R keys until the Utility Menu appears. Choose Disk Utility and click on the Continue button. After Disk Utility loads select the hard drive entry (mfgr.'s ID and drive size) from the side list.  In the Disk Utility status area, you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (S.M.A.R.T status is not reported for external drives.) If the drive is "Verified" then select the indented (usually, Macintosh HD) volume from the list.  Click on the First Aid tab, then click on the Repair Disk button. When it finishes then click on the Repair Permissions button. When that has completed quit Disk Utility and return to the Utility Menu. Select Restart from the Apple menu.
  5. Create a New User Account Open Users & Groups preferences. Click on the lock icon and enter your Admin password when prompted. On the left under Current User click on the Add [+] button below Login Options. Setup a new Admin user account. Upon completion log out of your current account then log into the new account. If your problems cease, then consider switching to the new account and transferring your files to it - Transferring files from one User Account to another.
  6. Reinstall OS X by booting from the Recovery HD using the Command and R keys. When the Utility Menu appears select Reinstall OS X then click on the Continue button.
  7. Erase and Install OS X Restart the computer. Immediately after the chime hold down the Command and R keys until the Apple logo appears. When the Utility Menu appears:
  1. Select Disk Utility from the Utility Menu and click on Continue button.
  2. When Disk Utility loads select the drive (out-dented entry) from the Device list.
  3. Click on the Partition tab in Disk Utility's main window toolbar.
  4. Set the number of partitions to one (1) from the Partition Scheme dropdown menu.
  5. Set the Format type to Mac OS Extended (Journaled.)
  6. Click on the Apply button.
  7. Quit Disk Utility and return to the Utility Menu
  8. Select Restart from the Apple Menu.

Run the free Etrecheck, and post the results back here. It is a privacy-oriented diagnostic utility written by one of our frequent contributors to this site etresoft. It will also determine if you have malware that the other applications did not find.

 

You can run the Etrecheck application directly from the Downloads folder, and remove it later if you choose.

最後更新：2017-08-26 04:18:10

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