Opened 9 years ago

Last modified 2 months ago

#7594 assigned bug

EDID screen detection are messed-up with a dual head display

Reported by: starsseed Owned by: nobody
Priority: normal Milestone: R1/beta2
Component: Drivers/Graphics/intel_extreme/g45 Version: R1/Development
Keywords: EDID Cc:
Blocked By: Blocking:
Has a Patch: no Platform: x86

Description

If I boot my DELL Latitude E6500 laptop with a 1440*900 built-in display with a 1280*1024 monitor connected to the external display port, the built-in display resolution is set with the external screen capabilities. the bottom of screen is truncated (124 lines high) and there is a black area on the right (160 columns width) (NB: the external screen is black).

Every things work fine when I do not connect an external screen.

video devices list:

device Display controller [3|80|0]
  vendor 8086: Intel Corporation
  device 2a43: Mobile 4 Series Chipset Integrated Graphics Controller

device Display controller (VGA compatible controller, VGA controller) [3|0|0]
  vendor 8086: Intel Corporation
  device 2a42: Mobile 4 Series Chipset Integrated Graphics Controller

device Bridge (Host bridge) [6|0|0]
  vendor 8086: Intel Corporation
  device 2a40: Mobile 4 Series Chipset Memory Controller Hub

Change History (11)

comment:1 by starsseed, 7 years ago

Component: Drivers/GraphicsDrivers/Graphics/intel_extreme
Owner: changed from nobody to axeld

comment:2 by kallisti5, 7 years ago

By external display port do you mean a "Display Port connector", VGA, or DVI?

comment:3 by starsseed, 7 years ago

I mean VGA
Sorry, it was obvious to me since the DELL Latitude E6500 laptop has a VGA port only (it's a quite old one now...)

comment:4 by luroh, 5 years ago

Moving out of R1 milestone (Prop #18).

comment:5 by luroh, 5 years ago

Milestone: R1Unscheduled

comment:6 by axeld, 3 years ago

Owner: changed from axeld to nobody
Status: newassigned

comment:7 by pulkomandy, 14 months ago

Milestone: UnscheduledR1/beta2

comment:8 by waddlesplash, 8 months ago

Please retest after hrev53040.

comment:9 by starsseed, 8 months ago

Since a few years, the intel_extreme driver must be blacklisted because nothing is displayed. Even with no external screen, all I can get is a black screen. (Every things used to work fine when I did not connect an external screen.) So, for the moment, I can't test this point.

Last edited 8 months ago by starsseed (previous) (diff)

comment:10 by pulkomandy, 2 months ago

Please attach a syslog with the boot leading to a black screen.

comment:11 by pulkomandy, 2 months ago

Component: Drivers/Graphics/intel_extremeDrivers/Graphics/intel_extreme/g45
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