Sizpack13/Samuel, Thanks for responding. This journal got jumbled somehow. I'm currently booted from a Live Fedora 31 system. I did this in the hope that the monitor would work. It did NOT. When I first connected this TV (2 years ago?) I did nothing special... it just worked. I have been running with kernel option "nomodeset" for a long time. Tried removing that with NO change in behavior. "stopped working" means: before power cycle, display worked perfectly, AFTER power cycle, TV had a box "NO SIGNAL" or "NO CONNECTION". I switched IDENTICAL CABLES with no change in behavior. Cables ARE DIRECTIONAL (Saphire 15'). Connected properly, i.e., arrows on both ends pointing AWAY from the computer. xrandr -q reports: HDMI-1 disconnected (normal left inverted right x axis y axis) > what has happend between the working / non-working state ? just a power cycle > video related updates ? none that I know of. > video related BIOS settings still okay ? I made no changes. > settings from the TV still okay (maybe a hidden FW update) ? I made no changes or FW updates. How would that happen? On 11.04.20 01:45, George R Goffe via users wrote: > Hi, > > My HDMI to TV (Samsung) stopped working 2 days ago and I'm trying to find out how to test the port. This is a Fedora 33 (Rawhide) (x86_64) system. The cable is good... swapped with a known working cable. Directional 15' Saphire cables... have arrows and are pointing the right direction (away from the system, to the TV). > > Any hints/tips/suggestions would be beyond GREATLY appreciated. > what means "stopped working" ? AFAIK, "known working cable" is relative: Got two boxes, both "working" with HDMI. but exchanging the cables => one box: NO picture ...(sometimes) No idea how to test a HDMI port, just some idea's: what has happend between the working / non-working state ? video related updates ? video related BIOS settings still okay ? settings from the TV still okay (maybe a hidden FW update) ? > xrandr -q > => HDMI yes/no ? see above > sound via HDMI and headphone output at the TV Sound card is broken in the system. TV sound self test worked as did the picture self test. > what type of graphics device? 01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 550M] (rev a1) (prog-if 00 [VGA controller]) > Does the display settings panel show the other screen? This is a KDE FC31 live system booted now. KDE system settings for the display does not show the TV. On Friday, April 10, 2020, 7:45:59 PM EDT, George R Goffe <grgoffe@xxxxxxxxx> wrote: Hi, My HDMI to TV (Samsung) stopped working 2 days ago and I'm trying to find out how to test the port. This is a Fedora 33 (Rawhide) (x86_64) system. The cable is good... swapped with a known working cable. Directional 15' Saphire cables... have arrows and are pointing the right direction (away from the system, to the TV). Any hints/tips/suggestions would be beyond GREATLY appreciated. Best regards, George... _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
