Trying to run an IBM TFT 15" monitor with [EMAIL PROTECTED] with my Ultra-2 and SBus graphic cards GX or TXplus, I learned the following:
GX, GXplus with Bt458 DAC only support the following resolutions: 1152 x 900 @ 66 Hz 1152 x 900 @ 76 Hz 1024 x 800 (!) @ 84 Hz (!) The last value is something, most TFTs cannot support, be it with the No. of lines (800) or more often, the high refresh frequency of 84 Hz. :-( Most native resolution of TFT monitors is 1024 x 768 @ 60 Hz. With the TGX+ SBus card (Bt 467 DAC), the choice of resolutions and/or refresh rates rises: 1152 x 900 @ 66 Hz 1152 x 900 @ 76 Hz 1024 x 800 (!) @ 84 Hz (!) 1024 x 768 @ 60 Hz (here it is!) 1024 x 768 @ 70 Hz 1024 x 768 @ 76 Hz (works well with most IBM TFTs) 1280 x 1024 @ 67 Hz 1280 x 1024 @ 76 Hz (should work with 19" TFTs) 1600 x 1280 @ 76 Hz 1920 x 1080 @ 72 Hz So, if you have a TGX+ card available, you should be able to find the matching resolution and refresh rate for the most common monitors, be it CRTs or TFTs. The setting is easily done inside the Open Boot PROM (OBP): setenv output-device screen:r1152x900x76 for example. My debian 2.6.18-6-sparc64-smp runs the correct settings of OBP, but screen resolution shows always the right chosen resolution with a very wrong refresh rate of 30915 Hz (ooops!). BTW: this link from Brian brought me on the right track: More info can be found here: http://mediacast.sun.com/users/Barton808/media/Sbus_cgsix_graphics_cards800-5114-10.pdf (read only pages 1-10, 1-11 for sense pin, 9-7 for GX cards, 9-22 for TGX+ cards) :-) I hope this will help others with their monitor settings. Regards, Norbert -- IBG Ingenieurbüro Gerhards Dipl.-Ing. Norbert Gerhards Laurentiusstr. 16 - 20 52072 Aachen Tel. 0241-705 08-14 Fax 0241-705 08-99 mobil 0172-240 66 36 email [EMAIL PROTECTED] URL www.ib-gerhards.de -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]