White Screen at cm10.1 Build 18.07.2013 (G) #35
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my device is jena |
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i also have white screen problem. hopefully it will fix |
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A gist with attached dmesg output for a known good build and the latest malfunctioning 20130818 build can be found here: |
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same problem with me too in my GT-6500T |
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I already explained here: http://forum.xda-developers.com/showpost.php?p=44751450&postcount=299 There is no possible way to detect which device has the LCD HW version that suffers from this bug. That means, if I add something to fix white screen, it can break something on devices that didn't have that problem in the first place. There are no error messages whatsoever. I am currently marking this as wontfix |
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I see. But if you'd provide a patch file then users who happen to have this particular problem could patch your kernel sources and build a working kernel themselves... just mentioning. Sort of leaving the error-detection to the human brain instead of coding a test for a certain (nonexistent) HW ID... :-) Thanks for your efforts. |
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I have problem too with white screen. Here is my logcat and dmesg with older build and with white screen bug. Here is my kmsg on stock device. And in kmsg you can find your HW ver. <7>[ 629.796738] LCD HW rev is 3, apply 3's init sequence On every device wake up he repeats this line <7>[ 629.796738] LCD HW rev is 3, apply 3's init sequence So rom checks every time for LCD HW. Please TheWhisp fix it. If you need logs or anything write it, I will provide every logs you need. |
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that kmsg is from stock ROM. And the message "LCD HW rev is 3, apply 3's init sequence" prints board's HW version: https://github.com/TheWhisp/android_kernel_samsung_msm7x27a/blob/jb-3.0/drivers/video/msm/lcdc_jena.c#L628 |
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Does white screen applies only to LCD HW rev. 3? Is there any log you require from stock to try to fix this problem? |
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idk. I also have rev.3 and no white screens. |
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Try this: https://www.dropbox.com/s/76pgapyfwqx2y6k/boot.img-jena-mdp-continuous-display.zip |
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I have uploaded my log file in Thank you for your great work |
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I downloaded the boot.img-jena-mdp-continuous-display.zip and put the boot image file into the cm-10.1-20130818-UNOFFICIAL-jena.zip file. |
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check the build date of kernel |
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Sat Aug 24 10:07:45 EEST 2013 |
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Version 3.0.93 |
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Here TheWhisp logs with new kernel, still white screen |
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well, at least the dithering is fixed :) idk, I have added all Samsung specific code back to display stuff. |
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I tried it and don't work... After unlock, still white... |
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Maybe this helps. Everytime, I mean 100% after device slept for a longer time (example 20mins or more) on first wake-up there is always white screen. So after longer period of sleep white screen always appear. |
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Again me. Tested in a call, also white screen, switched screen off and on multiple times with proximity sensor. No power key hope it shows something up. http://forum.xda-developers.com/showpost.php?p=44951905&postcount=2083 |
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Posting here because no answer in xda thread. TheWhisp, I'm sure that update MSM MDP to ics_chocolate in kernel 12.7.2013 cause LCD white screen for part of us. Maybe just maybe problem is lying here. Can you compile me a custom kernel with this two switched Line 109 and 110 Can you switch them and compile kernel for me to test it out? Thanks |
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Of course that change caused the problem. I was saying that right after the first report of the issue. I just didn't want revert that change. |
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Maybe this one can come with a patch, noting that the patch is for who has white screen issues.. anyways i dont have any problems on the screen. |
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Yes TheWhisp. Why won't we have two kernels one for white screen problem and one for normal devices? |
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Same here, same problem... with CM10, Cm10.1 . If Gapps is installed it does it even faster and more often... |
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I found a way to trick it:) you have to be fast but it works, i think it's the graphics that go into standby and they do not come online that fast or smth like it, hardware wise. But you can activate the screen doing the folowing tasks. If phone is locked, open it to the famous white screen, now unlock it ( the touch is responsive at this point ) so swipe by default to right, the click will be heard, then this is the tricky part that activates your screen... Do fast vol up, (listen to the clicks they will be lagging... No matter do these 3 steps fast), vol down, lock the phone and then open it again and voila the screen appears ok cause of the volume control that it is forced to be displayed and it kickstarts the background. |
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thanks for your information, i have tried to do that..but i need do it again after several minutes because white screen come up again... |
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Here are logs from last version 30.8.2013 fbsoft trick is working. I could get LCD every time, and I see volume bar so it has to do it with something. Unlock on blind, volume up and volume down and qucik relock. It is working. Logs are on xda. Maybe The Whisp can find something in logs :) Thanks fbsoft |
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@sipe hehe glad i could help :) yea you need to do it fast, i had tryed with the gapps installed and the trick worked, same thing... just lock it and unlock it fast, with the volume buttons, of course.... If you leave your phone alone for some time ( 30 mins up to 1h i think ), if you unlock it it displays ok the first time, but if you lock it and then unlock it, the white screen appears again unfortunetly. |
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I found this |
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Found. Hey! I've made an other kernel build for solving the white screen problem. No optimizations yet, but it seems that the white screens are completely gone for me (regardless any high temperature). Thats because I've increased the clock delay of the screen contorller further. The disadvantage of this that you have to wait 4-5 secs till the screen comes on, but I'm planning on solving that too - I've already started it today, but I only managed to make things worse, so I think it will take some more time (The attached .zip is flashable via CWM, like before ) Attachment :- http://forum.xda-developers.com/attachment.php?attachmentid=2450966&d=1386877655 |
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Will this help Cm 10.2 as well ? From: SGmini2 [mailto:notifications@github.com] Found. Hey! I've made an other kernel build for solving the white screen problem. No optimizations yet, but it seems that the white screens are completely gone for me (regardless any high temperature). Thats because I've increased the clock delay of the screen contorller further. The disadvantage of this that you have to wait 4-5 secs till the screen comes on, but I'm planning on solving that too - I've already started it today, but I only managed to make things worse, so I think it will take some more time (The attached .zip is flashable via CWM, like before ) Attachment :- http://forum.xda-developers.com/attachment.php?attachmentid=2450966 http://forum.xda-developers.com/attachment.php?attachmentid=2450966&d=1386877655 &d=1386877655 — __________ Information from ESET Endpoint Antivirus, version of virus signature database 9042 (20131113) __________ The message was checked by ESET Endpoint Antivirus. |
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Well … I have updated this version (upon 290912 , don’t know if that is ok ?) and the phone just displayed the CyanogenMOD circle keeps on turning , never getting to the actual OS . So , I have installed CM 10.2 (Wifi works better ) , and here are some facts :
Q :
Thanks , From: SGmini2 [mailto:notifications@github.com] Found. Hey! I've made an other kernel build for solving the white screen problem. No optimizations yet, but it seems that the white screens are completely gone for me (regardless any high temperature). Thats because I've increased the clock delay of the screen contorller further. The disadvantage of this that you have to wait 4-5 secs till the screen comes on, but I'm planning on solving that too - I've already started it today, but I only managed to make things worse, so I think it will take some more time (The attached .zip is flashable via CWM, like before ) Attachment :- http://forum.xda-developers.com/attachment.php?attachmentid=2450966 http://forum.xda-developers.com/attachment.php?attachmentid=2450966&d=1386877655 &d=1386877655 — __________ Information from ESET Endpoint Antivirus, version of virus signature database 9042 (20131113) __________ The message was checked by ESET Endpoint Antivirus. |
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Itried it on CM10.1 Build 11/10/2013 And it didn't work |
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What if all the phones have white screen and it only appears in countries with high temperature :D Crazy one :) |
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My phone has been exposed to >30 degrees Celsius in direct sunlight (for about 6 hours) - no white screen. |
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I've to think about something else before winter is over :D |
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Due to white screen issue I was stuck to build cm-10.1-20130707. Using builds after 07/07 the white screen was always present. Related to temperature, I can say that I'm using the phone between 20 to 30 Celsius Degree. Recently upgraded to cm-10.1-20131011 and flashed "bkernel_new.zip". White screen is now very rare in normal temperature conditions(20-30 Celsius degrees), sometimes it still appears but a second lock/unlcok will recover the screen. The disadvantage is that the delay is around 7 seconds in my case till the screen comes on. Thanks to "bozont91" for this workaround. |
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White screen problem on lockscreen a CM10-20130827,my device is GTS6500D (jena) |
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I am on GT-S6500 , and i don't have this problem at the same build... Really wierd... |
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@szotsy your have GT-S6500D you said, so you have jenad, not jena |
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I have got GT-6500D (jenad) and CM 11-20140111. I also have this bug. How can we fix it? |
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Hi! Sorry i don't know how fix this white screen problem! :( My wife's phone is no white screen! Because first the factory ROM has been Or try! The factory ROM can be downloaded here: 2014-02-01 Roman Ondráèek notifications@github.com:
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I found that post on Omnirom kk thread page 10 Also latest Titanium Backup FC, did flash supersu have root, TB works on other 4.3 and 4.4.2 units anyone else. Sent from my GT-I9300 using XDA Premium 4 mobile app |
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Hm... But some people had the WhiteScreen problem never on the Stock ROM, so it could be ALSO a SW error of Cyanogen. But if the Wife washed his sgm2, no wonder :D I never had that White Screen on CM 10.1 and never on the Stock ROM, but I have Jena, GT-S6500 with NFC, i flashed an JENA version of TheWhisps Port of CM 10.1, all worked without Problems, only Hotspot fails, but Bluetooh Tether works, so it's no Prob. Hopefully the people with WhiteScreen Issue are solving it. ThejenaROMtester |
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my god, how many times do I have to say this: it is a problem in kernel, specificity display drivers! I am not sure why it occurs on specific devices |
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I mean -theoretically as I'm not sure- there must be a difference between hardwares and that difference makes the kernel work for some phones and WS for others. :) |
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But the wife of the guy washed his phone -.- mustn't be a error of the new display... |
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Press seven times on the Build Number or Version in the Settings in About the Phone, then go to Performance and disable Dithering. Then reboot and then WhiteScreen should not be there. There is no difference between Dithering on and off. |
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I've tried that but white screen appears just like before ........................Anybody else tried this ? |
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Hm.. I had that WhiteScreen before i sent that, at my GTS6500 it was never b4 there, but then it was and i did that and WhiteScreen was not there. I think it was a SW error at my phone. @EAEN at yours it was a HW error with kernel. |
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I tried, but left the white screen .... :-( |
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Dithering isn't enabling 16-Bit |
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Try, but there is no such option in the Performance menu! / on CM11 / 2014-02-20 13:30 GMT+01:00 Dāvis Mālnieks notifications@github.com:
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Unfortunately, there is a white screen bug during February 26th cm11 jenad
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A quick summary for any new people reading this issue report (maybe this could be included above in the original issue report in bold flashing letters so people won't ask the same questions again and again):
Versions past that date WILL have the white screen bug because the kernel in any later build has been updated to a post-3.0-version which no longer includes the original (working) set of MSM display drivers.
Thanks. |
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I think I could found the solution. I just turn off the screensaver and, voila! it worked! |
and others
Thank u for ur hard theWhisp, I flash ur new build for cm 10.1 but after i lock my device the home button and the power button only show the white screen and after that only reboot the device that i can do, nothing else.
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