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21 Oct 2025
@luke:vuksta.comLukeI thought DSC was DisplayPort only tech? I could be very wrong21:42:13
@k900:0upti.meK900Also HDMI 2.121:42:30
@luke:vuksta.comLukeIt was a weird GPU that they nearly immediately dropped support for21:42:41
@luke:vuksta.comLukelmao21:42:47
@luke:vuksta.comLukeIt very well might be able to do it, and just doesn't have firmware for it21:43:04
@k900:0upti.meK900Oh god wait21:44:32
@k900:0upti.meK900Desktop Vega doesn't have DCN21:44:36
@k900:0upti.meK900Yeah OK this is a mess21:44:40
@luke:vuksta.comLukelmao21:44:43
@k900:0upti.meK900Mobile Vega has a significantly newer display controller IP21:44:50
@luke:vuksta.comLukeBut still, why doesn't the monitor advertise these speeds with the compression disabled?! What a mess21:45:34
@k900:0upti.meK900Because it can't21:45:51
@luke:vuksta.comLukeNo I mean the 120Hz speed21:46:03
@luke:vuksta.comLukeClearly it can do that, it is right now21:46:12
@k900:0upti.meK900Probably because it doesn't really make sense for them to advertise non-DSC modes21:46:16
@k900:0upti.meK900Except for weird compatibility reasons21:46:22
@k900:0upti.meK900At which point you will probably opt into them anyway21:46:30
@luke:vuksta.comLukeFair I guess21:46:44
@k900:0upti.meK900I am very confused by why AMD is advertising those as DP 1.4 though21:46:56
@k900:0upti.meK900Because DP 1.4 is supposed to include DSC21:47:01
@luke:vuksta.comLukeI gotta try HDMI now, see what it advertises 21:47:16
@k900:0upti.meK900It is going to be very little21:47:27
@k900:0upti.meK900https://trychen.com/feature/video-bandwidth21:47:50
@luke:vuksta.comLukeOh yeah, only advertises 60Hz21:52:09
@luke:vuksta.comLukeWell, this has been an interesting lesson in display tech21:52:25
@elvishjerricco:matrix.orgElvishJerriccointeresting. If this is correct, it seems the most I can get out of this 4K display without DSC is 75Hz22:06:36
@elvishjerricco:matrix.orgElvishJerriccowonder why that is. DP 1.4 can do 4K@120Hz without DSC, can't it?22:07:58
@luke:vuksta.comLukeThat is what I just found out22:16:50
@luke:vuksta.comLukeMy setting to disable DSC was monitor side though, perhaps yours is also not advertising the rates?22:18:01
22 Oct 2025
@linux-daddy:beeper.comLinux DADDYYou play?02:14:25

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