[Openchrome-devel] [Bug 94863] No signal at VGA (crt-tube) connected to DVI port of VX900

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94863

--- Comment #45 from HuangRan <huangranbj at 126.com> ---
Hi John, 

   Sorry that I put more information on DVI test result here which is not
related to  this VGA(crt-tube) issue.


Hi Kevin,

   We give a test with OpenChrome UMS 0.4.0 driver on T510/T5555/C90LE/V90LE
thin clients for DVI-I and DVI-D ports(C90LE and V90LE do not have DVI-D port)
and get following results:

                 DVI-I            DVI-D
T510              fail             suc
T5555             fail             suc
C90LE             fail              X 
V90LE             suc               X

   From the result we tested, it shows for DVI-D port for T510/T5555, the UMS
driver is working fine; By contrast, for T510/T5555 DVI-I port, the UMS driver
is failed to work. The possible reason is that DVI-I uses a external TMDS
transmitter Silicon Image Sil164 which current UMS driver does not support.
   For V90LE and C90LE, the result is very interesting because they both uses
VT1632 as the external TMDS transmitter, but the result is totally different.

Thanks,
Frank

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