Screen Flashing after MK908ii Finless ROM 1.5a

[Finless]

Was there any ROM you used that did not have flashing on your MK908ii?

Bob

[kandilak]

Was there any ROM you used that did not have flashing on your MK908ii?

Bob

I have use , stock update_mk908II_205j2105_geekbuying1220, your's 1.5a , your's kitkat beta , lewy200141's MK908II_HFW_2.0.3, and all having same behavior.

[ekanemore]

I have use , stock update_mk908II_205j2105_geekbuying1220, your's 1.5a , your's kitkat beta , lewy200141's MK908II_HFW_2.0.3, and all having same behavior.

Try 4.4.2 of Finless. In my case, no screen switch off, no flickering, no artefacts.

Now i have tested the problematics mk908ii in other tv Samsung and everything is ok in hdmi output 1080p, a little bit of flickering but ok ( no screen switch off).

Please, try in other tv and inform us.

[torbvea]

Is it possible that the 1080p kernel used in finless 1.5a work on MK908II devices with the RK3188 chip but not if the MK908II have a RK3188-T chip? I bought my stick from geekbuying late in december and when i checked the cpu clock speed it was only 1.4GHz, I haven't checked if it has a RK3188-T chip because there is a heatsink glued to the top of it, but because of the low clock speed, I thought that it could be because it maybe has a "T" chip.

When I use the newest stock firmware 19.12.13 in 1080p mode the screen is not flickering or turning off/on, but that firmware is only running a 720p kernel though..
When I use finless 1.5a with the 1080p kernel I have to change the resolution to 720p, otherwise it's flickering and it looks like I connect/disconnect the HDMI cable all the time.

[zerologicxxx]

Is it possible that the 1080p kernel used in finless 1.5a work on MK908II devices with the RK3188 chip but not if the MK908II have a RK3188-T chip? I bought my stick from geekbuying late in december and when i checked the cpu clock speed it was only 1.4GHz, I haven't checked if it has a RK3188-T chip because there is a heatsink glued to the top of it, but because of the low clock speed, I thought that it could be because it maybe has a "T" chip.

When I use the newest stock firmware 19.12.13 in 1080p mode the screen is not flickering or turning off/on, but that firmware is only running a 720p kernel though..
When I use finless 1.5a with the 1080p kernel I have to change the resolution to 720p, otherwise it's flickering and it looks like I connect/disconnect the HDMI cable all the time.

First of all, thanks to Finless and all the other devs for their effort in making the ROMS that we use on these sticks.

I also purchased a MK908II from geekbuying last December and after checking your post I do see that I also have a 1.4Ghz stick and not the 1.6Ghz advertised that I bought. I was planning to make another order from them for a family member and now I am hesitant to make that order if they are not shipping the item as advertised. I sent an email to customer support to report this.

I also experienced the screen turning on/off @ 1080p on 2 TVs and flickering on 1 (my MK908 runs fine @ 1080p on these TV using an older ROM) on my MK908II using Finless ROM 1.5a. Flashed it with the Finless Kitkat beta ROM rom with darrellr's kernel and no turning on/off or flickering issue @ 1080p. I have Wifi issues though. It keeps on dropping so I am using ethernet for now. BT not tested.
Experienced stuttering playing a 1080p movie on my local SD card.
When I click on Downloads, process android.process.media keeps on crashing.
Using XBMC 12.3 Frodo and works ok so far. Still doing further testing as of this post.

[curmudgeon]

MK908II HDMI instability

Was there any ROM you used that did not have flashing on your MK908ii?

Bob

I received a new MK908II yesterday. It came with firmware dated December 2013 and worked fine out-of-the-box. I flashed with this ROM 1.5a (tried all 4 kernels) but experienced cyclic blanking of video picture. Tried another TV (both TVs known to work well with MK808): same problem. Flashed with Picuntu 4.5 nand image: same problem. Flashed a Picuntu 4.4.3 kernel to recovery partition: same problem. Out of desperation, flashed update_mk908II_205j2105_geekbuying1220.img : problem not present. I'm now using your KitKat 4.4.2 ROM with no HDMI problem but I actually bought the device to run Picuntu so I'm not out of trouble. (The problem is also evident using Galland's preliminary Linux kernel for Radxa Rock.)

Under the fault condition, my TVs do not indicate "no signal" except at the very beginning. The screen just goes blank after a second or so of normal picture, then after another second or so the TV indicates that it is receiving a 720p or 1080p signal and after a second or so, displays the picture again. The problem starts right from the moment when booting commences; the picture will be coming and going.

[parasiticZ]

Hi everyone, just wanted to throw my two cents in. Recently bought a MK908ii from geekbuying through amazon and it came with this problem with the stock ROM. Ended up sending it back figuring it was defective hardware, and bought a MINIX Neo X7. No problem at first, it shipped with old 006 firmware. Flashed stock 008 and the same video cutting out problem I had with the Tronsmart shows up. Got 009 via OTA, still happening. So this problem isn't limited to Finless Roms and it isn't limited to Tronsmart devices. And if MINIX is to be believed that they don't use the slower T variant of the rockchip, it can't be that either. I'm glad smarter people than me are working on this, because it's driving me nuts.

[Finless]

Hi everyone, just wanted to throw my two cents in. Recently bought a MK908ii from geekbuying through amazon and it came with this problem with the stock ROM. Ended up sending it back figuring it was defective hardware, and bought a MINIX Neo X7. No problem at first, it shipped with old 006 firmware. Flashed stock 008 and the same video cutting out problem I had with the Tronsmart shows up. Got 009 via OTA, still happening. So this problem isn't limited to Finless Roms and it isn't limited to Tronsmart devices. And if MINIX is to be believed that they don't use the slower T variant of the rockchip, it can't be that either. I'm glad smarter people than me are working on this, because it's driving me nuts.

I keep posting this all over the place..

TAKE the box apart and check if the processor is a 3188T!

Minix says they are only shipping 3188. However several products are showing up with 3188T processors and this is, I am pretty sure, the cause of the flicker!

Only way to be sure is take the cover off and look!

Please help us confirm this flicker issue. It's not the ROM... it's the hardware... Well at least I am pretty sure.

If you got a REAL minix X7 with a 3188T, get it replaced. But be aware there are X7 clones out there! If the price was too good to be true... Chances are.. it was too good to be true!

Bob

[parasiticZ]

Thanks for the reply Bob. I'm not sure if I'm ready to open it up and rip off the heatsink just yet, I'll have to think about that. I can tell you that I got it off the Amazon link on the MINIX website.

[Finless]

Thanks for the reply Bob. I'm not sure if I'm ready to open it up and rip off the heatsink just yet, I'll have to think about that. I can tell you that I got it off the Amazon link on the MINIX website.

It's possible with the RASH of 3188T's that even Minix might have gotten some!

But if you wait a few more weeks I bet we will have this nailed anyway... You will just have a slower box at 1.4mhz as that is what the T is... a cheaper and hardware locked CPU.

Bob

[Jmanstan]

mk908ii screen still flickers

Hello to all, and hello to Bob. First off I must say thank you to Bob for all the great work. Bob this question is for you.I recently received my mk908ii and flashed it with the 1.5a ROM and noticed right away the screen was flickering, so I did some research on the forums and learned that if I switched my HDMI output mode to 720p 60hz it would solve the problem, so I did it and the screen was still flickering on and off. I would like to know if there are any way to correct this problem as of yet?

[Finless]

Not yet.... I do not even know whats causing it yet!

I have a 3188T box coming and hopefully that will allow me to figure it out.

Bob

[Jmanstan]

Not yet.... I do not even know whats causing it yet!

I have a 3188T box coming and hopefully that will allow me to figure it out.

Bob

Oh thanks so much Bob, thanks again for all you do, patiently awaiting.

[zerofail]

Same here, thank you very much Bob.

Oh thanks so much Bob, thanks again for all you do, patiently awaiting.

[curmudgeon]

Suspect my MK908II uses RK3188T

I've now flashed with Linaro (radxa-raring-alip-update.img) and there is no sign of the HDMI instability problem. cpufreq-info tells me that hardware limits are 312 MHz - 1.42 GHz. Curiously, there is a line in dmesg that says "cpufreq: delete arm freq(1608000)" so I can't be 100% sure that the 1.42 GHz maximum is genuinely a "hardware limit". This Linaro image lacks WiFi/BT support for MK908II but my Asix USB/RJ45 adapter works well and I can make do with that. Surprisingly, the included Chromium browser is faulty. Firefox is OK.