[Q] Flickering screen when flashing a new kernel? - Xperia SP Q&A, Help & Troubleshooting

Hey,
I've already made 2 other threads like this but since I keep finding out why this is happening and nothing worked so far, here I am with another thread
Basically, when I switch to any other kernel, it makes my screen flicker, which is very, very annoying...
I tried almost every kernel for my SP, including the DooMLoRd kernel for the stock firmware.
For cm11 I tried the FXP kernel and the stock one included in the official build. Both ROMs gave me screen flickering.
Things I tried:
-Forcing GPU rendering and disabling HW overlays at the same time.
-Trying a few scripts which claimed to have fixed the problem.
-Turning off Wi-Fi battery saving.
-Turning off auto brightness.
-Adding a few lines on the build.prop file before flashing the ROM.
And many more...
I know this is not caused by the ROM because:
-The stock kernel doesn't give me flickering on the stock ROM, but the DooMLoRd kernel does, and when I switch back to the stock one, it works just fine.
-All the things that fixed the problem for others on CM11 didn't work for me.
I don't understand...I didn't face this problem on my old Xperia Tipo.
Any ideas?
Thanks in advance

why 3 threads for the same problem????
thread closed

Related

[ROM][BUG]ROM to determine the origin of SoDs bug present on Zeus ROM...

First of all, I expect that mrs. reinbeau doesn't close this post, I feel it necessary in order to solve the main problem of my ROM.
This post is intended to all of you that have the problems so called SoD (Screen of Death), when the phone sleeps but don't awake... and the frozen screen problems too...
It's a new ROM progressively created from scratch in order to determine where is the problem.
Please, use it and comment here if the SoD issues are gone or remains; everything you want to say but ONLY RELATED TO THIS PROBLEM.
The instructions are easy:
- If you come from Test 2, or Test 2.1, simply flash Zeus v5 Lite over it. It won't wipe your data.
- Otherwise, make a wipe data / factory reset before flashing Zeus v5 Lite
- AFTER INSTALL IT, IN BOTH CASES, FORMAT /CACHE (--> mounts and storage --> format /cache).
- Once you have Zeus v5 lite, directly flash Zeus v5.03 over it.
- Zeus Test 2 (full wipe, complete ROM): d7fc02c423df42ecbdc4a9a2a0f7255c - Mirror
- Zeus Test 2.1 (dalvik and cache wipe, complete ROM): a3c20899db2d59e09fab60dd6aeb6094 - Mirror
- Zeus v5 Lite (dalvik and cache wipe, complete ROM): c55155a8aac4e5300b8239c08e739bd6 - Mirror
- Zeus v5.01 Lite (dalvik and cache wipe, update to Zeus v5 lite): 9a2907c9aec64857495fec093495afd1 - Mirror
- Zeus v5.02 Lite (dalvik and cache wipe, update to Zeus v5 lite): eee81e29f285d261fe442a370bb4dffb - Mirror
- Zeus v5.03 Lite (dalvik and cache wipe, update to Zeus v5 lite): f52fc7b9c2534da91c09f937c13b13f5 - Mirror
Changelog:
Test 2: Initial base ROM lightwighted, with original kernel and some opts.
Test 2.1: Fully themed Test 2, additional cleaning and some opts.
Zeus 5 lite: Prerelease, test it please... It has a lite zeus script, txpower, some opts, new Google Play Store...
Zeus 5.01 lite: To flash over Zeus 5 lite. Stock kernel recompiled with Linaro (unaltered, with stock configuration), with a new runtime parameter to enable/disable led dimming (thanks to sergey1369) and with led supply current reduced in a 20% to save battery. Updated zeus script with options to enable/disable led dimming and to change lockscreen. Fixes symlink to 'cp' busybox command.
Zeus 5.02 lite: To flash over Zeus 5 or 5.01 lite. Same features as 5.01 + cache again with ext4, new optimized mount options and fixed the auto enable/disable dimming at boot.
Zeus 5.03 lite: To flash over Zeus 5, 5.01 or 5.02 lite. Same features as 5.02 + new governors(interactiveX, Smartass2 and OndemandX[default]) + deadline + total control of the leds (high intensity, low intensity, enable/disable dim, timer) + txpower stock by default (touch it if you want) + runtime enable/disable fsync() enabled by default + upgraded zeus script... look into it!
Regards and thanks!
About 12 hours with your fix and everything is OK. I have v3.2b.
Pr3dator? said:
Is there a way to fix this on cyanogenmod
Envoyé depuis mon LG-P970 avec Tapatalk
Click to expand...
Click to collapse
What do you understand with ONLY RELATED TO THIS PROBLEM?
pk76 said:
About 12 hours with your fix and everything is OK. I have v3.2b.
Click to expand...
Click to collapse
Hi,
forgot the last fix posted on the other post... this is a new fix. Although you don't have problems with the oder fix, there supossedly are people that have problems...
Regards.
Now I have a worst problem: after the SoD, I did try to restart the phone by pulling out the battery and now it doesn't want to start again! When I push the ON/OFF button, the 4 leds start to blink but the screen remains in black (not off, is there a difference).
Then after 5 or 6 tries, it start and show me the CWM menu, I did apply your fix and still the same thing (doesn't want to pass from the LG logo, and sometimes even doesn't show the LG logo!).
What do you think is happening? I think is something related to the Graphics driver, maybe something changed in the Kernel to give more graphics performance or something, I really don't know...
tsakaji30 said:
Now I have a worst problem: after the SoD, I did try to restart the phone by pulling out the battery and now it doesn't want to start again! When I push the ON/OFF button, the 4 leds start to blink but the screen remains in black (not off, is there a difference).
Then after 5 or 6 tries, it start and show me the CWM menu, I did apply your fix and still the same thing (doesn't want to pass from the LG logo, and sometimes even doesn't show the LG logo!).
What do you think is happening? I think is something related to the Graphics driver, maybe something changed in the Kernel to give more graphics performance or something, I really don't know...
Click to expand...
Click to collapse
Hi,
if i have readed well, first you have the problem, and after that you have flashed my fix, isn't it?
Maybe you have any corrupted at /system, and the fix doesn't fix a ROM, only change certain things in the ROM to look for the SoD problem.
Try to flash V3x, then V3.2x and then the FIX 1.
Regards.
And no, there's no strange changes to kernel to boost anything that can harm your phone.
Regards.
Huexxx said:
Hi,
if i have readed well, first you have the problem, and after that you have flashed my fix, isn't it?
Maybe you have any corrupted at /system, and the fix doesn't fix a ROM, only change certain things in the ROM to look for the SoD problem.
Try to flash V3x, then V3.2x and then the FIX 1.
Regards.
Click to expand...
Click to collapse
Ok, I'm going to try this again from scratch.
Another important thing: I was having the same problem since V2, then I flashed V3 and it was gone by 2 or 3 days, then, yesterday my phone restarts itself and after that is a chaos hehehe
If is not something related to the graphics, then maybe is something related with the way your version commit data in the memory and maybe there is a data corruption that makes the phone behave weirdly.
Anyway, thanks a lot for your big effort, I regained the thrust in my phone after testing your zeus rom (i was just to sell the black and buy a Nexus hehehe).
Regards!
Thread cleaned
No worries, I won't close this thread, let's keep it on topic - and I'm a Mrs, not a Mr.
Huexxx said:
Hi,
forgot the last fix posted on the other post... this is a new fix. Although you don't have problems with the oder fix, there supossedly are people that have problems...
Regards.
Click to expand...
Click to collapse
So, you recommend me to use the newer version "b" fix or i can stay with the older one. Thanks for your great work. :thumbup:
reinbeau said:
No worries, I won't close this thread, let's keep it on topic - and I'm a Mrs, not a Mr.
Click to expand...
Click to collapse
Sorry!!!!!!!!
pk76 said:
So, you recommend me to use the newer version "b" fix or i can stay with the older one. Thanks for your great work. :thumbup:
Click to expand...
Click to collapse
Everyone can do what he want! The "old" fix was a quick attempt to fix the problem. While you don't have the problem, don't try this stuff becuase it's intented to catch the problem; no problem -> no catch...
Someone said that with the "old" fix the problem persists, so I have created this post to progressively approach the problem to know where is it, and then erradicate it!
- If people try this fix and the problem persists, it will be at the ROM itself, not in the kernel/boot.img/build.prop -> then we'll try to find it on the ROM.
- If people try the fix and the problem is gone, the problem is at my latest kernel/boot.img/build.prop, so I'll change progressively that stuff until we get the error again...
There's no other way IMHO.
Regards.
already activated fsyn and flahs ur fix, I ll give my feedback in a few hours, just let my try...
With my fix (THIS FIX, ON FIRST POST) there's no possibility of deactivate fsync because it's a diana kernel feature and wiht my fix you will have the stock kernel...
Thanks!
First of all, I'm not using this rom, I'm using cm7 temasek's build BUT I think somehow is related because this "SoD" is happening at the new builds...
And I wonder why? well I don't know but, it may be something with the rom itself?
Zeus is "official" and cm7 is "mod" but they're both based on gingerbread so there must be some connection.
I'm not trying to complicate things but trying to help, because this is not an isolated issue from zeus, this is present at cm7 new builds too.
Sorry but is not the same IMHO...
- CM7 are constantly changing and for whatever reason the most recent builds have this problem. So, different builds...
- my rom comes from stock rom (that doesn't have the problem, or that's what we hope...) and in a certain moment with some modification (of my own) the problem has emerged, WITH THE SAME BUILD.
When I find my problem, I hope it can allow cm7 people to fix the problem, but I'm afraid there are a lot of reasons why it can happen.
This thread is to test my rom with different things trying to find the bad change made to my rom, not a thread to discuss about Screen of Death.
Thanks anyway.
Hi Huexx!
First of all thank you for your patience and for your excelent work whith this phone.
About all this things of SoD, I whant to ask you something: have you ever faced it?
I don't know but I'am using your Rom since first and have installed the 3.0 then the 3.1 and then the 3.2, and I have never faced the SoD. How offten are this SoD's happening?
I'am using interactivex whit deadline and Fsync enabled.
I also never faced this SoD with your ROM (3.0n) and I'm using it for a while now. I skiped 3.1 patch and installed 3.2 yesterday and no SoD. But with cm7 I had this once don't know what version.
On the other hand a colleague at work have this issue with 3.1n a few days after install. I installed the 3.2n and we'll see.
yesterday I got 2 frozeen displays and have to remove battery,
Today (like about 5 hours ago) flash this fix and until now I dont have that problem at all... I just want to give my feedback, but I ll post again 5 hours later to say if donst get the problem again.
Sry about my pretty bad english.
Hackpb said:
Hi Huexx!
First of all thank you for your patience and for your excelent work whith this phone.
About all this things of SoD, I whant to ask you something: have you ever faced it?
I don't know but I'am using your Rom since first and have installed the 3.0 then the 3.1 and then the 3.2, and I have never faced the SoD. How offten are this SoD's happening?
I'am using interactivex whit deadline and Fsync enabled.
Click to expand...
Click to collapse
I've faced only one SoD, thats the reason i need people that have experimented more sods because their way of use the phone.
Sent from my LG-P970 using XDA App

Screen displaying wrong things

Hello, I got a serious problem with my Galaxy S..
something must be wrong here, when I'm on ICS, photos are displayed like they had a very poor quality or something like that..
I'm running SlimICS and tried devil kernel with and without Voodoo color, this didn't change anything.. even when I changed the VC values..
When I start my phone, at the point of boot up when the devil kernel boot screen appears, it first appears usual and within a second changes to some strange view, like you can see on the photos...
http://db.tt/qIhJejyu
these are pictures of the devil kernel boot screen, the other photos are pictures viewed on the phone. I hope you can help me
when using other kernels/roms(ics) the same thing appears so it's not kernel related
am I maybe posting in the wrong section?
can nobody help me?
Looks like a VC issue, have you tried some stock/custom GB roms?
Ajoslaf said:
Looks like a VC issue, have you tried some stock/custom GB roms?
Click to expand...
Click to collapse
GB is fine, but I want to have ICS goodness
ICS rom without VC has the same problem... I also tried Devil without VC...
But on GB rom it is OK? ... maybe you should try clean install of Slim ICS, that means - flash stock 2.3.6 jw5 (link to gb flash kit is in ics333 thread in development section), root it, flash newest cm9 nightly, and then slim ics and kernel, first try semaphore, then devil3 ...
yes, it's perfectly fine in GB..
already did this 100 times
Maybe you are doing something wrong if not, it may be a hw problem, but I don't think so...
don't know whats wrong with the device, ...#
EDIT: Okay, I guess I got it, as this device is pretty new, I got it replaced due to a warranty case, I think it has a newer display or something, which isn't supported by the drivers used in all AOSP based roms (CM7 also doesn't work)... pretty bad
Interesting... don't you have a Galaxy SL? It is SGS but with normal TFT screen, not with SuperAMOLED...
No, I don't have this ****..
Real SAMOLED I9000
darkcheater said:
No, I don't have this ****..
Real SAMOLED I9000
Click to expand...
Click to collapse
I'm facing the same problem. With GB kernel it looks fine, but with any ICS or JB kernel colors go really wrong
It's the first time I see it.
Any idea?
Seems to be a driver issue
I am having this issue too.
There is a video in youtube titled "CM9 on Samsung i9000 framebuffer bug ('blue color bug')" showing the same issue.
In the comments they say it's a problem with framebuffer (fb) driver.
I have been taking a look to Samsung's kernel fb for tl2796 lcd panel (which I suspect it's ours) and there is a feature called ACL which is missing in CyanogenMod's fb driver. This feature seems to perform some colour corrections.
I am willing to solve this issue but I have no knowledge about kernel drivers nor graphics drivers. I have been reading about it in different manuals and articles but I'm still lost.
I would thank any developer to point me to the right documents to learn how to solve this issue.
Maybe pawtip or stratosk could help.

I9000 freezing randomly

Hello there, i have my galaxy s for two years now, i've been flashing almost every rom i found, from froyo to cm7/miui to cm9, 10, 10.1, all have been wonderful and i thank you all for this.
All the problems i ran into i solved reading through hundreeds of pages and thousands of posts without the need of asking questions, again because of this wonderfull comunity.
Cm10 is my favourite but i have a little problem with it, which appeared short after the last partition layout change. My phone is constantly and randomly freezing whenever i browse the internet (using only stock browser). By freezing i mean the image get's stuck and all buttons, exept for the capacitive which light up when i touch them. It only works to hold the power button for 8 sec for the phone to reboot. After the phone reeboots, the kernell splash screen appears il loads up then the screen hoes black, the kernell splash screen loads again then it continues normaly, it's like a double boot or something.
The problem appears only on cm10 and aokp (4.1.2), havent tried miui4.1.
I also tried stock cm10 kernel, semaphore, devil, mackay, not using oc, ov, uv, anithing special, only on ondemand and smartass v2 governators
I have to mention it happens with flash installed and also without flash, with and without big mem libraries and setting in kernel.
Some help please would pe aprecieted, because for me cm10 and derivates work best.
Thank you and sorry for my bad english
Sent from my GT-I9000 using Tapatalk 2
Ynt: I9000 freezing randomly
First off "double booting" is just because of init.d scripts you're using.Some kernel options of yours too.So that's not the problem. I'm just like you.To be honest,i WAS. I stopped using custom roms for 4 months... I'm tired,bored.... So ... Also i'm using my phone just for music,texting,calling... not games actually and stock rom with stock kernel i mean without any tweak ,it's enough for me
i'm still continuing flashing but only switching between gb roms currently i'm on JW9 (Released in Jan 14 2013 ). Custom roms always better in performance but i dont need performance... It's all about battery life and stock for me!
GT-I9000 cihazımdan Tapatalk 2 ile gönderildi

[DISCUSSION] Fixing the OB's softkeys

Hi,
I just wanted to create a centralized thread for all the discussion surrounding the work of fixing the softkeys.
Many users are reporting, including myself, about the softkeys not working properly after some time on the ICS roms.
My 25 cents:
Is it a kernel issue? ROM issue? I have tried multiple ROMs but none have fixed the issue.
Multiple kernels tried too, to no avail. I suspect it is a software issue though. It's as if the buttons go into some state of sleep mode in the software, and after a few minutes come back for a few milliseconds. Just my thoughts into it.
-
Sergio
After facing the issue, i smartflashed gingerbread, there also softkeys not worked.
It is a kernel issue for sure. Worked great on GB, but I think they messed up the driver in ICS. Have you tried my blue kernel already? Dont know if I fixed it there, but it is worth a try. Or compile your own kernel, but use the GB Softkey files. Should work just fine with some mods here and there
Sent from my XT1052 using XDA Free mobile app
Has anyone successfully fixed this issue?
I am facing the same problem after flashing ICS on my OB.
i fixed it by replacing the digitizer, i had to order 2 cause the first arrived with the same problem.
Maybe
hackerse7en said:
i fixed it by replacing the digitizer, i had to order 2 cause the first arrived with the same problem.
Click to expand...
Click to collapse
I don't know about that though, mine works excellent through the CM key test. Just fails in the OS. And I can't use the kernel by Nooby, I'm on Nameless KK. But before that I tried IZS, GB, 2.1, etc to no avail.
I'm gonna research this and try and fix it in the Aeroi Kernel

Note 8 screen discolor which gets better/worse after flashing different rom/kernel

From what i see from my phone (N950F) running on samsung offic I’ll pie, the note 8 has this 2 screen problems:
1. Screen turns pale when it overheats
2. Yellow/greenish tint which makes some colors look weird
I tried to resolve the problems by flashing different rooms and kernels. The best results i have gotten are from flashing light rom Oreo with Phantom kernel 1.8.1 as this combination helps to resolve the 2nd problem. Other roms and kernels I’ve tried such as light rom nougat and light rom pie and IronKernel and the latest version of Phantom Kernel, do not help to resolve any problem.
Since I’ve heard the screen issue was a hardware problem, does anyone have any idea why different roms and kernels have different effects on the screen? And has anyone managed to solve both problems?
B3anbeanbean said:
From what i see from my phone (N950F) running on samsung offic I’ll pie, the note 8 has this 2 screen problems:
1. Screen turns pale when it overheats
2. Yellow/greenish tint which makes some colors look weird
I tried to resolve the problems by flashing different rooms and kernels. The best results i have gotten are from flashing light rom Oreo with Phantom kernel 1.8.1 as this combination helps to resolve the 2nd problem. Other roms and kernels I’ve tried such as light rom nougat and light rom pie and IronKernel and the latest version of Phantom Kernel, do not help to resolve any problem.
Since I’ve heard the screen issue was a hardware problem, does anyone have any idea why different roms and kernels have different effects on the screen? And has anyone managed to solve both problems?
Click to expand...
Click to collapse
Sorry... I prefer stock Samsung firmware and have no issue (do far).
Maybe flash stock firmware just to compare screen results. Then you can re-flash custom rom and kernel ... if you like.
Looks like maybe a software issue. I would recommend that you reinstall stock OS back onto your device
B3anbeanbean said:
From what i see from my phone (N950F) running on samsung offic I’ll pie, the note 8 has this 2 screen problems:
1. Screen turns pale when it overheats
2. Yellow/greenish tint which makes some colors look weird
I tried to resolve the problems by flashing different rooms and kernels. The best results i have gotten are from flashing light rom Oreo with Phantom kernel 1.8.1 as this combination helps to resolve the 2nd problem. Other roms and kernels I’ve tried such as light rom nougat and light rom pie and IronKernel and the latest version of Phantom Kernel, do not help to resolve any problem.
Since I’ve heard the screen issue was a hardware problem, does anyone have any idea why different roms and kernels have different effects on the screen? And has anyone managed to solve both problems?
Click to expand...
Click to collapse
this can't be an hardware problem... i have the exact issue as you. flashing stock os does nothing. only after using the phantom kernel does it get better. im convinced this is samsung's doing, it started happening after an update. it has never seen the light of day from then

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