Comments (2)
This looks like another instance of stale value in /sys/class/drm//edid, causing dref->drm_connector not to be set. Probably simplest to use ** ddcutil environment --verbose** to confirm. Execute the command after a hotplug and also when the system is started with the monitor plugged in.
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Attachments:
- Already connected and
nvidia-settings
enabledddcutil environment --verbose 2>&1 | tee boot-nvidia-config.log
- Reboot and hotplug, enable Beng via
nvidia-settings
thenddcutil environment --verbose 2>&1 | tee hotplug-nvidia-config.log
sdiff boot-nvidia-config.log hotplug-nvidia-config.log |less
...
Display 2 Display 2
I2C bus: /dev/i2c-4 I2C bus: /dev/i2c-4
DRM connector: card1-DP-2 <
/sys/class/drm/card1-DP-2/dpms On <
/sys/class/drm/card1-DP-2/enabled disabled <
/sys/class/drm/card1-DP-2/status connected <
Driver: Unknown Driver: Unknown
I2C address 0x50 (EDID) responsive: true I2C address 0x50 (EDID) responsive: true
I2C address 0x37 (DDC) responsive: true I2C address 0x37 (DDC) responsive: true
Is LVDS or EDP display: false Is LVDS or EDP display: false
Is laptop display by EDID: false Is laptop display by EDID: false
Is laptop display: false Is laptop display: false
/sys/bus/i2c/devices/i2c-4/name NVIDIA i2c ad /sys/bus/i2c/devices/i2c-4/name NVIDIA i2c ad
PCI device path: /sys/devices/ PCI device path: /sys/devices/
EDID synopsis: EDID synopsis:
Mfg id: BNQ - UNK Mfg id: BNQ - UNK
Model: BenQ T2200HD Model: BenQ T2200HD
Product code: 30502 (0x7726) Product code: 30502 (0x7726)
Serial number: 2C803527SL0 Serial number: 2C803527SL0
...
from ddcutil.
Related Issues (20)
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- Ubuntu 24.04 LTS prebuild package HOT 2
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- Failed assertion in check_video_adapters_list_implements_drm HOT 1
- Small suggestion for ddcutil documentation on the website HOT 1
- Dell UltraSharp 2209WAf: DDC communication failed HOT 8
- Ubuntu and Debian packages in OBS are missing libddcutil.so.x.x.x HOT 2
- Enhancement - consider packaging module loading HOT 2
- "Keeping adjust sleep multiplier" warning shown many times HOT 1
- Monitor resets many times on boot after new udev rule installed HOT 9
- System cannot enter S0ix sleep after running ddcutil detect HOT 6
- No (DisplayLink) displays found on 2.1.4, but works on 2.0.0 HOT 6
- ddcutil 2.1.4-1: DDC communication failed HOT 3
- [debian] updating linux-image pkg fails due to ddcutil dkms module failure HOT 2
- Cannot get capabilities: Maximum DDC retries exceeded. HOT 8
- Add an option to return the capabilities for a specific feature. HOT 4
- DDC communication failed (getvcp of feature x10 returned Error_Info[DDCRC_RETRIES in ddc_write_read_with_retry, causes: DDCRC_DDC_DATA(15)]) HOT 1
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