Bug 437992 - External HP LP3065 monitor w/ Thinkpad T60w will not light up
Summary: External HP LP3065 monitor w/ Thinkpad T60w will not light up
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: xorg-x11-drv-i810   
(Show other bugs)
Version: 5.2
Hardware: All Linux
Target Milestone: rc
: ---
Assignee: Adam Jackson
QA Contact: desktop-bugs@redhat.com
Keywords: Reopened, Triaged
Depends On:
TreeView+ depends on / blocked
Reported: 2008-03-18 15:57 UTC by Cameron Meadors
Modified: 2012-04-17 20:07 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2012-04-17 20:07:48 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Xorg log with both monitors plugged in (172.31 KB, text/plain)
2008-03-18 15:58 UTC, Cameron Meadors
no flags Details
xorg log with only the HP plugged in (77.82 KB, text/plain)
2008-03-18 15:59 UTC, Cameron Meadors
no flags Details

Description Cameron Meadors 2008-03-18 15:57:59 UTC
I am using the radeon-tp driver with an ATI Technologies Inc R580 [Radeon X1900
XT] video card.  When X starts all I get is a blinking green light on the
monitor.  The vga monitor I have plugged in via to the other dvi port works
fine.  If I only have the HP plugged in X I see nothing and the whole system
appears to hang (keyboard lights stop working).  I will attach two X logs: one
with both monitors plugged in and one with only the HP.

Comment 1 Cameron Meadors 2008-03-18 15:58:34 UTC
Created attachment 298410 [details]
Xorg log with both monitors plugged in

Comment 2 Cameron Meadors 2008-03-18 15:59:05 UTC
Created attachment 298411 [details]
xorg log with only the HP plugged in

Comment 3 Cameron Meadors 2008-03-27 15:18:25 UTC
I am partially an idiot.  The LP3065 only does 1280x800 or 2560x1600.  Once I
set my display resolution to 1280x800 the HP lit up.  Works now.  Now to get
2560x1600 working.

Comment 4 Matěj Cepl 2008-03-27 16:36:47 UTC
So, is this still a problem?

Comment 5 Cameron Meadors 2008-03-27 16:48:55 UTC
Confusing, but not a problem any more.

Comment 6 Matěj Cepl 2008-03-27 17:48:59 UTC
thanks a lot

Comment 7 Cameron Meadors 2008-04-03 14:59:27 UTC
Reopening after more clarification on expected results.  Also complicated by
differences between snap2 and snap3 behavior.  Now testing on snap3

The real bug is that X should find 1280x800 as a common mode and use that.  It
does not.  LVDS is at 1680x1050.  Manually changing res with xrandr to 1280x800
lights up the external monitor which proves that there is a common mode.

Comment 8 Cameron Meadors 2008-04-03 15:04:17 UTC
In snap 2 the external monitor lit up even if the mode was not 1280x800.  It
just displayed part of the 1680x1050 screen.

Comment 10 Adam Jackson 2012-04-17 20:07:48 UTC
No further hardware enablement updates are planned for RHEL5's X stack.  If this issue remains in RHEL6, please update the affected product version and reopen this bug.

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