HDMI Port on RX 470 breaks driver? (What)

[OleksiiTech]

So, mining RX 470 reflashed to 570 (since only fitting firmware was for 570) works fine, great even, when connected to Intel's iGPU. Driver can be installed without problems and patchers, runs benchmarks and games, large language models, all without problems. But when I connect it to hdmi which I "activated" by soldering, it breaks, shows 0 mhz and... look at screenshots. In Ryzen 5 5600 system though automatic drivers fix resolution, but problem remains same. Normal GPUz screen is through iGPU. Bad one through HDMI port on RX 470. Any reason why this happen? In device manager I get error 43, ati patcher doesn't help. Adding all pictures that may help. GPU Memory is samsung k4g80325fc-hc25. Thank you.

 

[VuurVOS]

Without knowing which bios is currently flashed, did you flash this bios before?

Sapphire RX 570 VBIOS

8 GB GDDR5, 1284 MHz GPU, 1750 MHz Memory

www.techpowerup.com

Could be caused by the GPU since it is a mining chip or the solder job.

This bios might also be interesting if the card is working properly

Sapphire RX 580 VBIOS

8 GB GDDR5, 1306 MHz GPU, 2000 MHz Memory

www.techpowerup.com

 

[OleksiiTech]

Without knowing which bios is currently flashed, did you flash this bios before?

Sapphire RX 570 VBIOS

8 GB GDDR5, 1284 MHz GPU, 1750 MHz Memory

www.techpowerup.com

Could be caused by the GPU since it is a mining chip or the solder job.

This bios might also be interesting if the card is working properly

Sapphire RX 580 VBIOS

8 GB GDDR5, 1306 MHz GPU, 2000 MHz Memory

www.techpowerup.com

The first you provided is the one flashed now. I will try to flash 580 2048sp.

Without knowing which bios is currently flashed, did you flash this bios before?

Sapphire RX 570 VBIOS

8 GB GDDR5, 1284 MHz GPU, 1750 MHz Memory

www.techpowerup.com

Could be caused by the GPU since it is a mining chip or the solder job.

This bios might also be interesting if the card is working properly

Sapphire RX 580 VBIOS

8 GB GDDR5, 1306 MHz GPU, 2000 MHz Memory

www.techpowerup.com

Patched 580 - same thing.

Without knowing which bios is currently flashed, did you flash this bios before?

Sapphire RX 570 VBIOS

8 GB GDDR5, 1284 MHz GPU, 1750 MHz Memory

www.techpowerup.com

Could be caused by the GPU since it is a mining chip or the solder job.

This bios might also be interesting if the card is working properly

Sapphire RX 580 VBIOS

8 GB GDDR5, 1306 MHz GPU, 2000 MHz Memory

www.techpowerup.com

Through Intel's iGPU it works. So.. Bad soldering?

 

[eidairaman1]

To get a miners video output to work you must verify traces are not cut and that resistors/caps are correct.

 

[OleksiiTech]

To get a miners video output to work you must verify traces are not cut and that resistors/caps are correct.

Well, it is working. On other system, one with R5 5600 without iGPU, connected to HDMI after windows installs it's drivers resolution is being fixed, becomes FHD. But driver still doesn't seem to work, 0Mhz issue and code 43. Patcher doesn't work. Connect to iGPU (in intel's case) and driver works, games, LLMs, etc without any pitchers.

Well, it is working. On other system, one with R5 5600 without iGPU, connected to HDMI after windows installs it's drivers resolution is being fixed, becomes FHD. But driver still doesn't seem to work, 0Mhz issue and code 43. Patcher doesn't work. Connect to iGPU (in intel's case) and driver works, games, LLMs, etc without any pitchers.

Oh and in my dual GPU system where I run RX 7600 XT+ RX 470 reflashed as 570, when I successfully install drivers and use RX 7600 XT for output, RX 470 also works fine, and driver for it too.

 

[bk2]

I have the same issue, exact same card. Glad to see this post to confirm I'm not just insane or doing something wrong.

For context, I performed the same HDMI fix as you on the board, and later I also tried soldering in the additional filter caps to give the card additional PCIe lanes besides the x1 that it comes wired for.

From my understanding, however, there are actually two variants of this particular mining card:
1, The good version: has all 16 PCIe lanes wired with filter caps, and bridging those resistor pads on the HDMI port works to grant the card full display out capability, runs fine as an 8GB 470/570/whatever you flashed it to
2. The bad version: this version, comes with only the 1 PCIe lane wired with filter caps, bridging those resistor pads will give display output, but in Windows it will break the driver. These cards are, however, full functional in Linux. I don't remember exactly where I read it, but I believe the speculation is that these cores are defective in some way, and that's why they were only wired X1 and the driver breaks with display output in Windows. Not sure how true that is, but would make sense, as miners wouldn't care so long as it has a lane to connect to their board and start hashing.

With my card, attempting to add the additional PCIe lanes didn't work, but I may have used the wrong value for the filter caps (I pulled them from a dead 7870)

Again, though, it works fine in Linux, so maybe it's related to some combination of Display Out + initialization of DX capabilities?

 

[OleksiiTech]

I have the same issue, exact same card. Glad to see this post to confirm I'm not just insane or doing something wrong.

For context, I performed the same HDMI fix as you on the board, and later I also tried soldering in the additional filter caps to give the card additional PCIe lanes besides the x1 that it comes wired for.

From my understanding, however, there are actually two variants of this particular mining card:
1, The good version: has all 16 PCIe lanes wired with filter caps, and bridging those resistor pads on the HDMI port works to grant the card full display out capability, runs fine as an 8GB 470/570/whatever you flashed it to
2. The bad version: this version, comes with only the 1 PCIe lane wired with filter caps, bridging those resistor pads will give display output, but in Windows it will break the driver. These cards are, however, full functional in Linux. I don't remember exactly where I read it, but I believe the speculation is that these cores are defective in some way, and that's why they were only wired X1 and the driver breaks with display output in Windows. Not sure how true that is, but would make sense, as miners wouldn't care so long as it has a lane to connect to their board and start hashing.

With my card, attempting to add the additional PCIe lanes didn't work, but I may have used the wrong value for the filter caps (I pulled them from a dead 7870)

Again, though, it works fine in Linux, so maybe it's related to some combination of Display Out + initialization of DX capabilities?

I confirm it working under Linux, played some games from Steam using proton. As for PCIe lanes I will try to add them and write my result here, but it will not be soon, need to wait for flux and practice a bit. Interesting fact is that in other PC of mine (B550m and Ryzen 5 5600) resolution doesn't break anymore, however driver still doesn't work. On PC this GPU was bought for (H110 + Pentium G4600) everything is fine only on Linux, but that's probably not a big deal. Lanes, however, are important for me, so it's kinda sad if it's impossible to add them. I never seen RX 470 with one freaking lane before, bruh