Opened 9 years ago

Last modified 8 weeks ago

#5308 assigned bug

Error at 1680x1050 resolution on Intel GMA 950

Reported by: xeon3d Owned by: kallisti5
Priority: high Milestone: R1/beta2
Component: Drivers/Graphics/intel_extreme Version: R1/Development
Keywords: resolution strech gma950 Cc:
Blocked By: Blocking:
Has a Patch: no Platform: x86

Description

Hi.

I have a GMA950 equipped mobo and a LG L204WS Widescreen 20" monitor.

When setting the 1680x1050 resolution (My LCD's native res), the image gets stretched.

According to Pulkomandy (on IRC) this is due to the pixel clock not being as high as it's requested by the monitor. See the attached syslog.

Attachments (1)

syslog (104.7 KB) - added by xeon3d 9 years ago.
Syslog of the affected machine.

Download all attachments as: .zip

Change History (6)

Changed 9 years ago by xeon3d

Attachment: syslog added

Syslog of the affected machine.

comment:1 Changed 7 years ago by axeld

Can you please take a photo so that I can have a better understanding of what's going on? I think it's unlikely that the 5 MHz difference cause such problem (or else your monitor is really picky). I would guess it's more likely that we choose wrong multipliers causing the hardware to deliver a different signal.

Also, does your monitor has a menu that shows the input resolution? If so, it would be neat to include that one with your photo. Thanks, and sorry for the delay!

comment:2 Changed 7 years ago by kallisti5

So we can continue troubleshooting this issue, please recheck this card with the latest nightlies. Several fixes have gone into the Intel extreme drivers.

If problems still exist, take a picture and grab some syslogs.

comment:3 Changed 3 years ago by gordonjcp

Could this have been related to https://dev.haiku-os.org/ticket/10271 ? The monitor mentioned is an analogue one so would have shown weird stretching if the PLL wasn't locked - even though the dot clock *says* it's nearly right, the actual generated dot clock would have been way off.

comment:4 Changed 21 months ago by axeld

Owner: changed from axeld to kallisti5
Status: newassigned

comment:5 Changed 8 weeks ago by pulkomandy

Milestone: R1R1/beta2
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