NVRM: NO NVIDIA GPU Found

[sam.hu]

Hi Today I got one desktop resolution issue on Xavier NX,
here is the phenomenon:

1. after going to desktop , the resolution is 1280X720， and I cannot choose any other resoluton
2. when I check the dmesg, I found there is no NVIDIA GPU found
3. after I reflash the image , this issue still occured
4. this is our customized carrier board, and it has operating fine for one month, it just happed today…
5. BSP version 35.1

what kind of situation will cause this NO GPU found issue?

[WayneWWW]

Hi,

No GPU is not related to your issue. Please directly share me the full dmesg.

[sam.hu]

dmesg (76.1 KB)

here is the log

[WayneWWW]

As the guess, it is due to device fails to read the EDID from your monitor.

That is why it is only 720p because that is a fallback edid written in the driver.

[ 13.226665] kernel: tegra-i2c 3190000.i2c: I2C transfer timed out
[ 13.798652] kernel: tegra-i2c 3190000.i2c: I2C transfer timed out
[ 14.038675] kernel: tegra-i2c 3190000.i2c: DMA transfer timed out
[ 14.206666] kernel: tegra-i2c 3190000.i2c: DMA transfer timed out
[ 14.478649] kernel: tegra-i2c 3190000.i2c: I2C transfer timed out
[ 14.702776] kernel: tegra-i2c 3190000.i2c: DMA transfer timed out
[ 14.858703] kernel: tegra-i2c 3190000.i2c: I2C transfer timed out
[ 15.014756] kernel: tegra-i2c 3190000.i2c: DMA transfer timed out
[ 15.097706] kernel: tegradc 15200000.display: hdmi: edid read failed
[ 15.097969] kernel: tegradc 15200000.display: hdmi: using fallback edid

This is hardware design problem. Please review your carrier board with design guide document.

[sam.hu]

many thanks for your quick reply, Wayne, I will check the I2C circuit, maybe there is something wrong

will let you know later if the GPU issue can be fixed

[WayneWWW]

Again. this issue has nothing to do with GPU… Just ignore that log…

[sam.hu]

yes, you are right, after I trying unplug the HDMI cable and plug again, the resolution recovered,

maybe it’s the I2C circuit compatibility issue, I will check it,