Bug 235157
| Summary: | On-chip RMX mode cause video corrupt on IBM server | ||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | LisaWu <liswu> | ||||
| Component: | xorg-x11-drv-ati | Assignee: | Adam Jackson <ajax> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | |||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 5.0 | CC: | liswu, rod.macdonald, woliu, yma | ||||
| 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: | 2007-08-17 13:14:42 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: | |||||||
| Attachments: |
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Created attachment 151642 [details]
while validate DFP modes, we matching modes from EDID info by default
duplicate of #235156, sorry for the inconvenience please close this one. |
Description of problem: when install RHEL5-BETA2 on IBM Lewis server, video on local monitor is in poor quality, and there is no video output on remote control. Version-Release number of selected component (if applicable): xorg-x11-drv-ati-6.6.3-1.el5.rpm How reproducible: always Steps to Reproduce: 1.connect a monitor to server 2.log in to the remote control 3.install rhel5-beta2 and start X-windows Expected results: following modes on both local monitor and remote control should be OK. vesa mode: 1024x768@75hz, 70hz,60hz 800x600@75hz,72hz,60hz Actual results: None of the above modes are OK. Additional info: on-chip RMX mode is only enabled when the driver thinks it’s driving a digital panel which will cause poor quality on CRT. This is also an old day’s radeon driver preference that probably shouldn’t be used any more because almost all modern TMDS panels have internal scaler which usually can result in better quality than our internal RMX. in our case, radeon driver use RMX modes for remote video by default, however, the stretched RMX modes can't be well supported. To fix this bug, we can change digital pannel mode validation routine not to use RMX mode by default, but validate modes by matching modes from EDID info instead.