https://bugs.freedesktop.org/show_bug.cgi?id=40747
--- Comment #4 from [email protected] 2011-09-09 20:55:52 PDT --- > 2.6.32 kernel allowed to use higher resolution because it didn't take into > account hardware limitations - NV44's tmds maximum pixel clock is 155MHz and > 1600x1200 needs 162MHz. Hmm... I must admit I had no idea of such a limitation. And I've had this machine for 5 years or so, now. I've always used it at 1600x1200. At the beginning, I used it at that resolution via VGA rather than DVI (not sure if that tmds limit applies to VGA), but the nvidia driver was also happy to set it to 1600x1200 over DVI (tho the nv driver always limited itself to 1280x1024 over DVI, which is why I used VGA until nouveau matured). And ever since nouveau's kernel module started to work, I've used it for 1600x1200 over DVI. I must say I'm shocked that a graphics card of the 21st century would not be able to go up to 1600x1200. Hell, my old Matrox Millenium II went up to 1800x1400 without complaining, more than 15 years ago. Are you *really* sure of this 155 limit? So I guess I have 2 options: - find a way to convince nouveau to go past this limit. Could we get an option to get back the pre-2.6.37 behavior of limiting the tmds to 165? - find a way to tell nouveau to use a modeline which gives me 1600x1200 but without the annoying "non optimal mode" warning on my monitor. Is there a way to get finer control on the modeline than "video=NNNxMMM"? BTW, the 3.0.0-1 log shows that providing a "video=1600x1200" argument convinces nouveau to use 1600x1200 and while it doesn't use the native modeline (at 162Mhz) it does use a modeline at more than 155MHz: [ 7.316860] [drm:drm_mode_debug_printmodeline], Modeline 48:"1600x1200" 0 160961 1600 1704 1880 2160 1200 1201 1204 1242 0x0 0x6 Not sure where that modeline comes from, nor why nouveau seems to ignore the 155MHz limit for it. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ Nouveau mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/nouveau
