OS X 10.8, Mountain Lion

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14
votes
2answers
13k views

Why are some Mail messages shown as empty with “This message has no content”?

Sometimes new messages come in and Mail (on OS X Lion and Mountain Lion) shows them as empty, with "This message has no content" in the preview column. The message is empty in the full message view ...
14
votes
15answers
38k views

Wi-Fi connection randomly disconnects on 2012 MacBook Air

My 2012 MacBook Air has problems with Wi-Fi – random disconnections, every few minutes. The problems occurred with Lion, and persist after an upgrade to Mountain Lion. It seems the Wi-Fi drops ...
14
votes
5answers
11k views

No email notifications when Mail.app isn't running?

On Mountain Lion, I don't get email notifications in Notification Center when Mail.app isn't running. This is not the expected behaviour (it is inconsistent with the Mail.app behaviour on iOS) and ...
14
votes
2answers
401 views

Avoid showing hidden applications in the cmd+tab navigation menu

I recently switched to OS X Mountain Lion. I have applications like Skype and Pidgin which start at login and are hidden, but when I have more applications running and I do ⌘ cmd + ⇥ Tab to switch ...
14
votes
2answers
339 views

Time separators blinks inconsistently

If I have OS X display the time in the menu bar with blinking separators, the seem to blink inconsistently. I've taken a 32 second video of the effect. It's happening on two of my MacBook Airs, 13" ...
14
votes
2answers
2k views

How do I use AirDrop from the Terminal?

Is there a way to share a file over AirDrop via Terminal on Mountain Lion? How so?
13
votes
4answers
31k views

How to get back the missing monitor option in Mountain Lion's menubar?

When plugging in an external monitor on every OS X < 10.8 you could set the monitor options to show up on the menu bar. How do I get this option on Mountain Lion? I connect a DVI monitor via the ...
13
votes
2answers
12k views

How do I install MacVim?

How do I install MacVim on Mountain Lion? I want to get the MacVim application, as well as the new command-line vim. I see there are several ways to do it (a snapshot from Google Code, via ...
13
votes
4answers
40k views

How to write on FAT32 and NTFS from Mountain Lion?

What is the best free software for OS X Mountain Lion for enabling write support for FAT32 and NTFS?
13
votes
1answer
7k views

How to view progress when encrypting a disk?

Mountain Lion allows one to encrypt any disk by right-clicking on the disk in the Finder and selecting Encrypt from the contextual menu. Is there anyway to check on the progress of this encryption ...
13
votes
5answers
7k views

How to revert Safari 6 Web Inspector?

The new Safari 6 Web Inspector UI is a usability nightmare for me due to loads of tabs/panes with small icons and no labels. It also seems to complicate common tasks like showing a list of XHR ...
13
votes
2answers
3k views

What does the secure keyboard entry menu item in Terminal app do?

What does this option in Terminal do? It seems to have no effect on anything.
13
votes
7answers
6k views

How do I enable the Debug menu in Calendar?

The following command entered in Terminal will enable the Debug menu in iCal (Lion): defaults write com.apple.iCal IncludeDebugMenu YES I would like to accomplish the same thing in Calendar ...
13
votes
2answers
7k views

Audio balance is being changed randomly in a MBP retina 15'' mid 2012

I'm having some strange issues on my MBP retina , suddenly it changes the audobalance, and the right speaker is being almost muted. Anyone knows what could be wrong here? I have OSX 10.8.2
13
votes
2answers
622 views

How can i enable Time Machine encryption on the command line?

Is is possible to enable encryption for a Time Machine target disk with a script/using the command line? Is an encrypted Time Machine disk really just the same as a normal disk, full-disk-encrypted ...
13
votes
3answers
13k views

How to refresh Messages on Mac after hibernation?

I've set up iMessage on my iPhone correctly (apple id) with Messages on my Mac (OSX Mountain Lion), and it syncs. But the syncing isn't flawless.. Everytime I wake up my Mac after hibernation, it ...
12
votes
7answers
18k views

How to check if my HD is case sensitive or not?

How can I get information if my HD format is case sensitive or case insensitive? I want to make sure my Mac running Mountain Lion has a case sensitive file system.
12
votes
3answers
14k views

Does the Microsoft Intellipoint software work with Mountain Lion?

I've been using the Microsoft Intellipoint software with Leopard, Snow Leopard, and currently Lion, to provide mouse cursor movement that feels a lot more like Windows. Has anybody tried installing ...
12
votes
9answers
20k views

How do I lock the screen using a keyboard shortcut on OS X Mountain Lion with a Microsoft Natural Ergonomic Keyboard 4000?

Title says it all: how do I lock the screen using a keyboard shortcut on OS X Mountain Lion with a Microsoft Natural Ergonomic Keyboard 4000?
12
votes
3answers
4k views

How safe is it for me to install Java on OS X 10.8

I know very little about how Java works and its interactions with OS X, so I'm partly looking for an expert and simple description on how Java works on the Mac, and why so much press includes "fear, ...
12
votes
3answers
12k views

How can I add missing avatar/profile pictures in Messages?

In the new Messages application introduced with Mountain Lion, I cannot see my own avatar. This is happening even though my Messages.app email is linked with my contact in Contacts.app. No Avatar ...
12
votes
15answers
9k views

Intriguing connection issue on OS X

I've been recently having this issue with my internet connection on my MacBook Pro Early 2011 running OS X 10.8.3: from time to time the connection "freezes" for about 5 seconds and then comes back. ...
12
votes
7answers
10k views

Hide files/icons on the desktop but not in finder

Not sure if something like this exists in OSX. I would like to display a cheatsheet on my desktop as a wallpaper and to make it visible at all times I would like to hide all the icons/files/folders ...
12
votes
6answers
4k views

10.8 reminders snooze duration

When I get either a Calendar or Reminders notification, I have the option to 'snooze': I would like to be able to say something like 'remind me in 10 minutes' or 'remind me in 2 hours' (much like ...
12
votes
3answers
19k views

Reinstall Mac OS X Mountain Lion before selling a Mac

I want to sell my laptop (Macbook Pro late 2011). I have erased my disk drive but it seems that I cannot reinstall Mac OS without an Apple ID. At the origin my mac was shipped with Lion, I have ...
12
votes
1answer
4k views

How can I prevent my Mac from periodically whooshing at me?

Seemingly randomly throughout the day, my mac will "whoosh" at me. I set up Messages, but whenever I switch to Messages after the whoosh, I don't have any new messages and usually my buddies are set ...
12
votes
6answers
10k views

How to set screen resolution with a keyboard shortcut on Retina MBP?

I've found myself switching between the 1440x900 and 1920x1200 "effective resolution" setting depending on what I'm doing (need more space on screen, etc). Is there a way to toggle between these two ...
12
votes
4answers
5k views

Can a Mac's airport card run 802.11 N, G, B or A only?

Occasionally it's nice to hard code a wired connection network port to not auto negotiate and force things to be 100 half duplex even though a higher speed is configured and negotiable on the switch. ...
12
votes
1answer
12k views

Disappearing Alerts - Notification Center not working as per Preference Settings

I'm trying to understand how to get Notifications working properly in Mountain Lion. I understand all the concepts about how to enable them, and configure them etc, but it doesn't seem to work as ...
11
votes
4answers
614 views

Is there a way to forward Growl notifications to Notification Centre?

Since there's a lot of apps that support Growl, and only a handful have been updated yet, I'd like to know if there's a way to convert those Growl notifications into Notification Centre notifications. ...
11
votes
4answers
13k views

Eclipse 4.2 on Mountain Lion: gatekeeper rejects as unidentified developer?

Just updated the mountain lion, and download the latest Eclipse 4.2 to upgrade the old one. However when opening the application, it shows that it is from an unidentified developer and the gatekeeper ...
11
votes
8answers
6k views

Does Notification Center have keyboard shortcuts?

Are there any keyboard shortcuts for controlling Notification Center on OS X Mountain Lion? Of particular interest is a shortcut equivalent of the Click to Tweet button that appears at the top of ...
11
votes
5answers
33k views

How to save chat logs in Messages for Mountain Lion?

I always used to save my Chat logs because I use IM in the professional environment. Now I find that I can’t save chat logs anymore. That option is gone. Is there any workaround or hidden preference ...
11
votes
4answers
63k views

How to fix broken EFI partition?

I have an iMac running OSX Lion. I also installed bootcamp and Windows 7. During the install of Windows 7 I wasn't paying complete attention and deleted and formatted the EFI partition. I didn't ...
11
votes
4answers
7k views

Can sudo's annoying message be removed from Mountain Lion 10.8.0?

After the upgrade to 10.8.0, whenever I do a sudo, I always get this message: dyld: DYLD_ environment variables being ignored because main executable (/usr/bin/sudo) is setuid or setgid I have ...
11
votes
3answers
26k views

How to stop MacBook Pro (Retina) from freezing/locking at the login/authentication dialogue, after wake?

Steps to reproduce: Be doing anything Close the lid of the computer Wait around for a while Open the lid of the computer Login prompt for last logged in user appears, battery and time MAY update, ...
10
votes
2answers
907 views

Why does File:/// crash my app?

Whenever I type File:/// into the URL bar in Chrome, into Text Edit, and more, it crashes the app. I found out about this after reading this blog post. How can I avoid this crash and make it ...
10
votes
4answers
28k views

Multiple Java versions support on OS X and JAVA_HOME location

I know is possible to have multiple versions of Java on OS X but i find it difficult to understand how it works. I upgraded to Mountain Lion and now echo $JAVA_HOME is empty. However in ...
10
votes
3answers
8k views

Desktop image is not showing in Mountain Lion with dual monitor

I have a MBA connecting via HDMI to Samsung Monitor. Problem is desktop background for Samsung monitor is not showing. There is only grey desktop and doesn't have any changes even I try to change the ...
10
votes
3answers
8k views

How do I set a custom avatar for my account profile in Mountain Lion?

I just got Mountain Lion. On previous versions of OS X, I could choose a photo from the filesystem as my account avatar. This doesn't seem possible under the Users & Groups section of System ...
10
votes
6answers
4k views

What hooks exist into Notification Center / twitter so that I can tweet programmatically?

I'm specifically looking to design a custom action for LaunchBar so that I can initiate a tweet from that utility. Since Notification Center has a "Click to tweet" button, I wondered if Notification ...
10
votes
3answers
4k views

Can Gatekeeper be disabled via terminal in OS X 10.8 Mountain Lion?

How can you disable Gatekeeper via Terminal Commands in OS X 10.8 Mountain Lion? I am looking to replicate the Security & Privacy preference pane selection to allow applications downloaded from ...
10
votes
2answers
6k views

How do you get system diagnostic files from OS X?

I am trying to debug a crashed (or hanging) app. How do I get the diagnostic files from the crash?
10
votes
6answers
14k views

Can't get rid of incomplete download bar underneath dock icon

My Downloads folder in my dock has been showing a download/progress bar at 50% since yesterday. There aren't any half-complete files in my Download folder, Google Chrome isn't awaiting any action to ...
10
votes
4answers
14k views

How to switch language of OS X dictionary?

In Mountain Lion the OS X internal dictionary that you can fire up by right clicking a word, or by using the dashboard widget, seems to have gained at least one new language: German. Since German is ...
10
votes
8answers
3k views

getting “out of memory” error when trying to load specific websites (am not out of RAM)

UPDATE: Rich's solution (with the checkmark) solved my problem! I also posted an answer with a workaround that may help if Rich's solution doesn't work for you. The answer that received the bounty was ...
10
votes
6answers
10k views

How can I configure custom repeat intervals for Reminders?

I would like to configure an alert for a recurring reminder in Reminders.app on Mountain Lion. Currently the only options I have for repeating the alert are "Every Day", "Every Week", "Every 2 Weeks", ...
10
votes
2answers
15k views

MacBook Pro with Mountain Lion freezes frequently (full screen Flash in Chrome, Messages, HTC on USB)

Problems following an upgrade to Mountain Lion on a 13-inch, Early 2011 MacBook Pro (MacBookPro8,1 with Intel HD Graphics 3000). With Google Chrome, I was watching YouTube video fullscreen – Flash ...
10
votes
4answers
19k views

Safari 6: How to change default fonts?

This is probably a duplicate. I can't imagine I'm the first person to notice this. It seems that Safari 6 has removed the appearance tab from the preferences, and with it, the ability to change the ...
10
votes
5answers
6k views

How can I dismiss the App Store banner in Notification Center without taking an action?

This is the notification that pops up from the App Store on Mountain Lion: As you can see, the only options are Details and Update. Most of these banners have a 'close' button, to dismiss the ...