Discussion AMD possibly flawed 4600Gs, white/black bar flickering on the lower part of the screen while watching videos

[Shivansps]

I decided to post this maybe im missing something. In the past few months im seeing a lot of problems with videos on 4600G causing flickering on the lower part of the screen ... youtube, netflix, amazon prime, on browsers and their own windows apps.

https://imgur.com/UF1TXJq

After days of testing i noticed that:
-The problem starts to happens in resolutions higher than 1366x768, 1440x900 is the first resolution that shows this problem.
-The problems gets easier to notice if you open multiple youtube tabs of videos and start playing around with the timeline on one of them (as show in the video i attached), but it happens on a single video whiout any input.
-White bar flickering on Windows 10 and black on Windows 11, probably related to the theme.
-OBS screen recording does not capture the problem so the issue has to be on the display circuity
-Tested A520, A320 and B450 on multiple bios and multiple drivers
-Tested multiple hdmi cables and monitors
-Does not seem to happen on VGA
-Does not happen on the 3000G/5600G/5700G

CPU revision is RN-A1

We are talking about over 100 cases in this month for ourselves alone and im yet to find a 4600G that dosent show this problem, but one of my coworker told me he did a week ago.

 

[SteinFG]

I have a 4600G pc on which I sometimes watch youtube , never seen such problem and can't replicate it using your instructions.
Windows 11. Radeon driver ver. 23.11.1 , chipset driver 4.09.21.138

 

[Tup3x]

Have you tried disabling MPO?

 

[Shivansps]

I have a 4600G pc on which I sometimes watch youtube , never seen such problem and can't replicate it using your instructions.
Windows 11. Radeon driver ver. 23.11.1 , chipset driver 4.09.21.138

It is rev RN-A1?

After talking to a local AMD rep, they seem to know of some bad 4600Gs, so it may be limited to some more or less recent batchs. But im still not sure if we are talking about the same problem.
These bad ones seems to be of the last few weeks of 2023. "ED 2346PGS" for example.

 

[Shivansps]

Have you tried disabling MPO?

no, ill try that.

 

[gdansk]

No one reported it in Linux?

 

[SteinFG]

It is rev RN-A1?

After talking to a local AMD rep, they seem to know of some bad 4600Gs, so it may be limited to some more or less recent batchs. But im still not sure if we are talking about the same problem.
These bad ones seems to be of the last few weeks of 2023. "ED 2346PGS" for example.

Where do I check that? On the CPU IHS, or just CPU-Z?

 

[Shivansps]

Where do I check that? On the CPU IHS, or just CPU-Z?

cpu-z for the revision.

 

[zir_blazer]

It is rev RN-A1?

AFAIK all Renoirs are RN-A1. If what you're looking for is related to manufacturing date or batchs then you will need something like this and tell people that can reproduce it to look for box info or even on the CPU heatspreader itself.

 

[Shivansps]

AFAIK all Renoirs are RN-A1. If what you're looking for is related to manufacturing date or batchs then you will need something like this and tell people that can reproduce it to look for box info or even on the CPU heatspreader itself.

On AMD the manufacturing date is on the heatspreader, the ones i saw with problems go for 2346 to 2405, thats what makes me think its not a hardware problem because, 11 weeks is a hell of a lot of cpus.

Im yet to try MPO, i dont have any 4600G now, we returned them all.