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| Posted by john.blandford4 Garmin Nuvi - Screen Brightness Randomly Changing Very happy with my 3597, but struck a problem yesterday which through a spanner in the works. Driving in full daylight, the screen was set to high brightness and Display Timeout to 'Never'. But the brightness would keep returning to 20% which was near impossible to see in the sunlight. After resetting and confirming brightness to even 100%, it would still return to 20% after a minute or two. Then the complete reverse problem when driving later that night. The brightness kept jumping up to 100% which was very distracting in the dark. Went back and checked that there wasn't a hidden menu I'd missed in the instructions and couldn't find any mention of this problem in this forum so did the obligatory Google and found references to needing to set the Current Time to 'Automatic'. It appears that unless this is checked, the unit gets confused and doesn't know if it is meant to be day or night. Have done a couple of short tests and this appears to have resolved my problem. Although with the explanation, I understand the association (of time and automatic dimming), I would never have found this setting without others having shared the resolution. Yay for forums! |
| Posted by jeffreies Garmin nuvi 3597 - Screen Brightness Randomly Changing JB, is your clock on 24HRS time? ..it may sort the problem out if you can see if it's on AM, or PM.. Jeff |
| Posted by skot 3597 Dimming randomly I had this problem when I first bought my 3597 this week...did a system boot and it is now working perfectly...no more random dimming |
| Posted by GDT More... Some posts are not listed here. See all posts here: Garmin Nuvi - Screen Brightness Randomly Changing GPS Data Team |
| Posted by RichD Screen Flicker I just got a new Garmin 2689 yesterday and the screen flickers a lot. Does anyone know what to do? :( |
| Posted by CKS The real reason why it "flickers". It's a fe For all the fellow frustrated Garmin users here I think I know where the problem truly lies. Garmin software folks try to be smart in backlit level and automatically dims it to like 25% when you enter a marked tunnel or underpass where the ambient light is very low. This works and helps to reduce glare to the driver. The problem is when you are just travelling past or over a marked tunnel and not actually inside, the device has no way of knowing and still dims the screen. Unfortunately this is a case of being too clever for its own good. My old 255W never had this issue but my 3560 does. There is no hack to disable tunnel dimming as far as I have been searching. Hope this answer helps. Now can someone do a hack to disable this auto tunnel dimming? -KS |
| Posted by Phyllis R Brightness I was having the same issue with the brightness, I restored "Time" to automatic and the brightness remains bright. |