Bug 186905
Summary: | problems displaying 1600x1200 on a dell 2001FP monitor with dell X1 laptop. | ||
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Product: | [Fedora] Fedora | Reporter: | Wes Armour <wes.armour> |
Component: | xorg-x11-drv-i810 | Assignee: | X/OpenGL Maintenance List <xgl-maint> |
Status: | CLOSED CANTFIX | QA Contact: | |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 5 | ||
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2006-05-19 04:43:05 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Wes Armour
2006-03-27 11:33:30 UTC
The i810 video driver uses the video BIOS for all mode setting (VBE) as the driver does not contain any code to set the video mode directly to the hardware. This is due to programming information being unavailble to do this in the open source drivers properly. As a result, the driver is limited to using the video modes that the video BIOS provides. There are a number of Dell laptops and personal computers, as well as computers from other vendors, which use Intel video hardware but unfortunately they do not all program their video BIOS mode tables properly to include the mode for the native LCD panel size in many laptops, or which is used by many DFPs nowadays. The unfortunate result of this is that many users will be unable to run their LCD or DFP at its native resolution, in particular with widescreen displays. This is a driver limitation caused by broken video BIOSes. Intel has begun working on next generation video support, which may be available in the near future which can directly program video modes with some of the more recent Intel video hardware, however that support is currently an experimental work in development currently. Users of Fedora Core 5 and earlier OS releases may or may not be able to use the i8xxresolution or i9xxresolution utilities floating around the net to hack around this problem. These utilities rely on the video BIOS being shadowed into RAM, and then overwrite the mode tables in shadow RAM with new video modes. The result of this is that sometimes you can coax the BIOS into displaying the proper native video mode of your LCD/DFP. The downside is that it is not guaranteed to work, and since it is only an ugly hack, there may be various problems that occur as a result, which may include instabilities, or corruption or other problems. You already indicated that you have been using the i855resolution utility, so there is nothing more that can be done about this at this point in time, until the new Intel video driver is available, which has native modesetting support - assuming that it supports your particular chipset. You may wish to follow the new driver's development by joining the xorg.org mailing list, and reading the archives. The new driver effort is lead by Eric Anholt. Setting status to CANTFIX. |