[NV94] HDMI Connected, but TV reports "no signal"
Submitted by Jay van Dam
Assigned to Nouveau Project
Description
Created attachment 107397
kernel log with nouveau.debug=trace and drm.debug=0xe
Hardware information:
CPU: Intel Core2 Quad Q9400
Graphics card: GeForce 9600 GS (output: 1x VGA, 1x DVI, 1x HDMI)
Version information
Distro: ArchLinux x86_64
Linux Kernel: 3.16.3 (compiled with CONFIG_DRM_NOUVEAU=m)
libdrm: 2.4.58
Mesa: 10.3.0
xf86-video-nouveau: 1.0.11
Issue:
TV connected via HDMI reports "no signal" when system is booted. During boot the HDMI display output works fine, but when selecting the kernel to load in the bootloader the TV starts reporting "no signal". As the output is already lost before any X
What I tried so far:
- Booting with HDMI cable connected
- Booting with HDMI and VGA cable connected
- Booting with no cables connected, following hotplugging HDMI and VGA
None of above actions resulted in a fix or any other results with the display via the HDMI port, the display of the VGA port always is functional.
Other findings:
- The NVIDIA proprietary drivers HDMI display output works fine with the TV
- Graphics card is GeForce 9600 GS, according to the CodeNames this should be a NV96 (G96), though when quering the system it reports as G94. This seems to be conflicting. 05:00.0 VGA compatible controller: NVIDIA Corporation G94 [GeForce 9600 GS] (rev a1)
- While having the HDMI and VGA connected, querying the status of all ports report that the HDMI and the VGA are connected::
-- ~: for p in /sys/class/drm/*/status; do con=
{p%/status}; echo -n "{con#*/card?-}: "; cat $p; done-- DVI-I-1: disconnected
-- HDMI-A-1: connected
-- VGA-1: connected
Similar bugs:
60680 - Same issue (bug marked RESOLVED FIXED)
63139 - Same issue (bug marked RESOLVED INVALID) due to missing response bug reporter
~~**Attachment 107397**~~, "kernel log with nouveau.debug=trace and drm.debug=0xe":
kernel-nouveaudebug-drmdebug.log