Bug 14575
| Summary: | using a hdmi connector frame buffer resolution maxes out at 1920x1200 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Wil Reichert (wil.reichert) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | CLOSED DOCUMENTED | ||
| Severity: | normal | CC: | alan, alexdeucher |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.32-rc6 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmesg with hdmi connected
dmesg with dvi connector attached |
||
Created attachment 23721 [details]
dmesg with dvi connector attached
HDMI-A only supports single link tmds (max pixel clock of 165 Mhz). 2560x1600 requires dual link tmds which is only available over DVI in your case. Doh, should have read the spec sheet better. Thanks. |
Created attachment 23720 [details] dmesg with hdmi connected Using a Radeon 4890 / Dell 3008WFP, a day or 2 old git kernel & kms built into the kernel. Using a DVI connector the kernel boots into the native panel resolution of 2560x1600, when using the hdmi connection it defaults to 1920x1200. Even after booting into X I was unable to set the native resolution. dmesg attached.