Tag Archives: blank screen

fixed : LandRover navigation update gone wrong, navigation maps gone

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Question :

I tried upgrading the HERE maps on the navigation system in my LandRover Discovery Sport P300e using a USB-stick as per the directions given by HERE and LandRover, but after 3 attempts that failed for no clear reason, when I retried yet another time, the update crashed while it was about halfway and now… there is no map left in the system to use for the navigation… nothing… the navigation is completely blind…

What can I do to solve this ?

Answer :

There are several reasons why this problem might have occurred. Your LandRover will probably show a warning message advising you to go to a LandRover garage and get this fixed, but you can also give it a try yourself first, just make sure you include all of these additional instructions in your next attempt :

  • start off by using a USB-stick with no previous navigation files on it – if you do not have a brand new USB-stick of 32GB at hand, you can also try using the current one : no need to format it, just open it in the Finder (on macOS), then inside the folder named “HereV1”, select all files (press the CMD-A key combo) drag them to the Bin and empty the Bin
  • goto the landrover.here.com website, login using your account name and pasword, goto “Maps & Services”, click the “Get Latest Update” button of the map you want to install and in the next page that opens, start by downloading and installing the latest version of the MapDownloader-app before you proceed to downloading the desired map itself ; just finish making the USB-installer as usual
  • now, before you enter your P300e hybrid LandRover to start the update, make sure to unplug the electrical charger cable before you start your car (so the engine will stay running during the entire update process that may take up to 30 or even 45 minutes to complete – if your electrical charger would be plugged in, your engine won’t start and your car will definitely go into sleep mode before the navigation update is finished ; if you like you can take a drive during the map update, just remember you are not able to see any maps on your screen during the update – you might be able to use navigation though Apple CarPlay in the mean time – and you have to keep the engine running until the update is complete, so you cannot leave the car until done)
  • when starting the navigation update in your car, wait with plugging in the USB-installer until the car’s system asks you to do so and make sure you use a different USB-port than you did before

…then proceed as per the onscreen instructions and sit back and relax

…if you do so, the update process may appear to be a little slow, but it will succeed in about 30 minutes. (and if it doesn’t just try again – and if it still fails after a few attempts, the problem is not ‘just an upgrade’ so you will still have to contact a LandRover garage to get it fixed)

That’s it !

enjoy 😉

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fixed : MacBook’s external monitor screen stays black

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Question :

In my office, I am using an external monitor as my main screen for my MacBook Pro. Today, the screen didn’t respond when I connected my MacBook however : the screen stays black and nothing appears on-screen. So I opened up my MacBook and used the built-in screen to figure out what’s wrong, but so far I haven’t found any indication in the Displays Preference Panel that my MacBook even detects the second screen…

What can I do ?

 

Answer :

In such situations you should always do this first :

Remedy #1 :

  • if you are using a MacBook, MacBook Air or MacBook Pro, make sure you have the power adapter connected
  • if your laptop is on battery power, the external screen will go black whenever you close the lid of your laptop (when on battery power, all connections are powered off when you close the lid to save energy)

if this works, you’re good, if not, try Remedy #2

Remedy #2 :

  • make sure your monitor is switched ON
  • then hit the SPACE-bar on your external keyboard several times (maybe once, usually about 5 to 10 times…)
  • the monitor should now appear and show the inlog panel to unlock your screensaver
  • then login

if this works, you’re good, if not, try Remedy #3

NOTE : if you have a Benq monitor (especially the BL2420TP), try this first :

fixed : Benq monitor stays black when MacBook is switched on

Remedy #3 :

  • unplug all cables between the monitor and your Mac ( DisplayPort / Thunderbolt / HDMI / DVI / VGA  and also USB, UTP, FireWire and PowerAdapter )
  • shut down your monitor
  • shut down your MacBook
  • reconnect all cables and double-check if they’re properly connected on both the Mac and the monitor
  • switch on your MacBook
  • switch on your monitor

if this works, you’re good, if not, try Remedy #4

Remedy #4 :

  • on your MacBook, open Apple [main menu bar top-left] –> System Preferences
  • in the System Preferences window, select “Displays”
  • in the Display Preferences window, see if there is a button marked “Gather Windows” bottom right
  • if there is no “Gather Windows” button, press the ALT-key on your keyboard and a button marked “Detect Displays” appears ; click on it when it appears

if this works, you’re good, if not, try Remedy #5

Remedy #5 :

  • on your MacBook, open Apple [main menu bar top-left] –> System Preferences
  • in the System Preferences window, select “Displays”
  • in the Display Preferences window, see if there is a button marked “Gather Windows” bottom right
  • if there is a “Gather Windows” button, click on it
  • then you will see 2 Display Preference windows on your MacBook screen
  • select the Display Preference window that has 3 tabs on it marked “Display”, “Arrangement” and “Color” (not the window that has “Display” and “Color” only)
  • first, press the ALT-key on your keyboard and a button marked “Detect Displays” appears where the “Gather Windows”-button used to be ; click on it when it appears
  • if your monitor switches on, you’re good, if not…
  • click on the “Arrangement”-tab and in the next window put a checkmark at “Mirror Display”
  • if your monitor switches on now, uncheck the “Mirror Display” option again and close your MacBook… you should be good now…

if this didn’t work, try Remedy #6

Remedy #6 :

  • unplug all cables between the monitor and your Mac ( DisplayPort / Thunderbolt / HDMI / DVI / VGA  and also USB, UTP, FireWire and PowerAdapter )
  • shut down your monitor
  • shut down your MacBook
  • reconnect your Mac to your monitor using a different type of cable then you normally would choose (e.g. if you normally use a DisplayPort/Thunderbolt-cable, use an HDMI or DVI cable now)
  • switch on your MacBook
  • switch on your monitor
  • if your monitor wakes from sleep now, open Apple –> System Preferences
  • in the System Preferences window, select “Displays”
  • in the Display Preferences window, see if there is a button marked “Gather Windows” bottom right
  • if there is a “Gather Windows” button, click on it
  • then you will see 2 Display Preference windows on your MacBook screen
  • now, remove the monitor-cable that you have just used to connect your MacBook to your monitor
  • then, reconnect your MacBook to your monitor using all cables you normally use to connect the two
  • if your monitor now wakes from sleep, you’re good
  • if it doesn’t, restart your monitor
  • it that doesn’t help, restart your Mac

normally your issue should be resolved by now…

if still the monitor stays showing a back screen, I’m sorry to inform you that your screen probably has a hardware problem… if so, get an authorized Mac-repair-centre to fix it, get the Apple Store support-crew to fix this…

that’s it !

enjoy 😉