Grey lines and green flicker on webcam when using AC power



  • Same issue here with Asus VivoBook S430FN-EB136T Intel Core i5-8265U/8GB/256GB SSD/MX150/14", please provide a solution

  • José CarlosJosé Carlos Level 1
    edited June 2020

    I have the same issue with my Asus Vivobook 15 Model x512fj, i bought it recently and even sent it to tecnical assistance to solve this and another problem with the graphics card, the camera still doesnt work properly though.

  • AnonAnon Level 1
    edited June 2020

    Hey @Blake_ASUS (or anyone else) i have the exact same issue as everyone here.

    As this is my work laptop i would appreciate an update for my BIOS as well.

    This is my model: Asus Zenbook ux392fa_ux392fa


  • Hello @Blake_ASUS ,


    I have exactly the same problem (grey lines and green flicker on the webcam while on AC power) with my brand new laptop: ASUS VivoBook S15 S532FL-BN094T. Can you help me please? I have bought my laptop in an Italian Asus Gold Store.

  • Hello @Blake_ASUS ,

    Similar problem with UX433FN - A5247T

    BIOS Version: 310 (28/April/2020)

  • IvnIvn Level 1

    Same issue here: S15 - S530FN i7 8th gen.

    Disconnecting AC solves the problem.

    Thanx for helping.

    Have a nice day!


  • Level 1
    edited June 2020

    Hey @Blake_ASUS ,

    I'm having the same issue and unfortunately I have a university exam in a couple days which is proctored aka needs the webcam on, could you send me the bios that fixes it if one exists? My laptop model is Asus VivoBook S15 S512FL-BQ279T

  • Dear all user above,

    I have send PM to you, or reply you in the thread.

    If you have not receive it, please kindly let me know.

    Thank you so much.

  • IvnIvn Level 1

    Received PM, BIOS updated and problem completely solved.

    Thank you, Blak_ASUS and thank you, ASUS.



  • Hi @Blake_ASUS , same issue here with VivoBook UB8D15CC

    Can you please assist?

    Thank you!

  • MoniqueMonique Level 1

    @Blake_ASUS Having the same issue with the Zenbook Pro Duo UX581G. Please send me a PM so I can send the serial.

    Thank you.

  • Hi @Blake_ASUS,

    I am having same problem with my ZenBook Pro Duo UX581GV. I updated to latest BIOS from ASUS website (version 307 2020/05/09), but that didn't solve the problem. Where can I get latest BIOS version with a fix? Thanks.

  • @Blake_ASUS I am having the same issue with the Asus Vivobook X512F. Took it into the shop to replace the camera and the motherboard but the issue still persists. Please send me a PM so I can send the serial.

    Thank you.

  • Hi @Blake_ASUS, I'm having the same problem as the others. I received my laptop less than a week ago and updated to the April release BIOS 307 with no luck. Asus Zenbook Duo Pro - please PM me so I can send you my SN. Thanks!

  • Good morning @Blake_ASUS

    I also have the mentioned issue with my ZenBook Pro Duo, both external and internal webcam flickers, on multiple occasions, I am in a video meeting only to find the other participants suddenly suffer with fits due to the excessive flickering of my webcam.

    I have seen that a BIOS update seems to have fixed this for many users, would it be possible to help update mine, just to save the poor people that have to endure a video call with me.

    Many thanks,


  • Hi Everyone. Blake_ASUS PM'd me the applicable BIOS update for my laptop. After unzipping the file using 7zip and updating the BIOS to the new version using ASUS EZ Flash 3 Utility during the Advanced Start-up, the lines have stopped flashing. I can now have my video calls with my AC adapter plugged in and not have to stare at those flashing horizontal lines.

    Thank you Blake_ASUS!

  • After updating the BIOS, the problem is solved and the horizontal lines have stopped flashing. Thank you very much @Blake_ASUS!!

    I have another issue: the fan starts running noisily when the AC adapter is plugged in, specially while videocalling; disconneting AC, fan stops running. Can you help me solving this problem too?

  • aharrisaharris Level 1

    Hi @Blake_ASUS I'm having the same issue with camera flickering with AC power only on my 1 week old ASUS Zenbook Pro Duo Model UX581G. Are you able to PM me with BIOS update.

    Thank you for your help,


  • Hello @Blake_ASUS I am having a similar issue with the webcam flickering. The laptop is brand new. Asus ExpertBook P5440FA. Current BIOS Version is 311. Please assist. Thanks.

  • Hi @alogarta,

    BIOS 311 is the one we released to fix this issue.

    Please provide a short video of the current issue on your device.

    Thank you.

This discussion has been closed.