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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - No signal to monitor with X and openchrome using VX855 chipset graphics"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91966#c234">Comment # 234</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - No signal to monitor with X and openchrome using VX855 chipset graphics"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91966">bug 91966</a>
from <span class="vcard"><a class="email" href="mailto:kevinbrace@gmx.com" title="Kevin Brace <kevinbrace@gmx.com>"> <span class="fn">Kevin Brace</span></a>
</span></b>
<pre>Hi Justin,
Thank you very much for trying out the patch.
It appears that I2C bus 3 is not showing anything.
_____________________________________________________________________
. . .
(II) CHROME(0): Entered via_dvi_init.
(--) CHROME(0): VT1632A found on I2C Bus 3.
(II) CHROME(0): I2C device "I2C Bus 3:VT1632A" registered at address 0x10.
(II) CHROME(0): Entered via_vt1632_probe.
(II) CHROME(0): Vendor ID: 0x0000
(II) CHROME(0): Device ID: 0x0000
(--) CHROME(0): VT1632A DVI transmitter not detected.
(II) CHROME(0): Exiting via_vt1632_probe.
(II) CHROME(0): I2C device "I2C Bus 3:VT1632A" removed.
(II) CHROME(0): Exiting via_dvi_init.
. . .
_____________________________________________________________________
If VT1632A were found, it will display Vendor ID of 0x1106 and Device ID of
0x3192.
Instead, you got 0x0000 back for both.
If I were to speculate, what this can mean is that I2C bus 3 is not functioning
in HP T5550, or is not present.
It appears that something is connected to I2C bus 1, so maybe if I2C bus 1 is
used for dealing with VT1632A and DVI-D.
I will try to get a patch in the next few days that will utilize I2C bus 1 for
VT1632A detection.</pre>
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