| Summary: | new_pll algo gives flickering LVDS on rv620 (HD 3470 mobility) laptop | ||||||||||||||||||||
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| Product: | DRI | Reporter: | Stefano Carignano <scary.moo> | ||||||||||||||||||
| Component: | DRM/Radeon | Assignee: | Default DRI bug account <dri-devel> | ||||||||||||||||||
| Status: | RESOLVED FIXED | QA Contact: | |||||||||||||||||||
| Severity: | normal | ||||||||||||||||||||
| Priority: | medium | CC: | aderumier, kirill | ||||||||||||||||||
| Version: | unspecified | ||||||||||||||||||||
| Hardware: | x86-64 (AMD64) | ||||||||||||||||||||
| OS: | Linux (All) | ||||||||||||||||||||
| Whiteboard: | |||||||||||||||||||||
| i915 platform: | i915 features: | ||||||||||||||||||||
| Attachments: |
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Description
Stefano Carignano
2010-02-01 02:27:38 UTC
Created attachment 32961 [details] [review] dmesg with new_pll=0 Created attachment 32962 [details] [review] xrandr --verbose output. It's the same for new_pll=0 and =1 (In reply to comment #0) > Created an attachment (id=32960) [details] > dmesg with new_pll=1 > > Latest drm-radeon-testing kernel (1 feb 2010), as soon as KMS kicks in with the > new_pll algo, the LVDS picture shows some kind of ripple effect, as if > something was slightly wrong with the refresh rate. Kind of hard to describe.. > The effect persists even when starting X. Changing screen resolution doesn't > help. The new_pll has never worked for me since its introduction back in > december (took me a while to find out it was the culprit). Booting with > radeon.new_pll=0 gives me a perfectly usable system. > Please attach the output of lspci -vnn and I can add a quirk for your laptop. > On a side, probably unrelated note, I can't help but notice that the kernel > (both the working and the non-working versions) finds an HDMI port, but unless > I'm becoming blind my notebook has no HDMI out .. hm. > It's likely on a docking station. Created attachment 32992 [details] [review] lspci -vnn thank you. For those interested, it is a Toshiba A300-1BU laptop. Created attachment 33009 [details] [review] 1/2 add pll algo selection rework The two attached patches should fix the issue for you. Created attachment 33010 [details] [review] 2/2 add lvds pll quirk for toshiba second patch. yup it works now, thanks again Hello, I have exactly the same problem with my laptop (dell studio 15) with RV620 chipset. with new_pll=0 no flickering lines, with new_pll=1 i have flickering lines i'm running 2.6.33-rc7-git6 kernel, are this patchs already pull in main kernel tree ? do you need more informations ? (dmeg , drm debug? ) Regards, Alexandre Derumier (In reply to comment #8) > Hello, I have exactly the same problem with my laptop (dell studio 15) with > RV620 chipset. > > with new_pll=0 no flickering lines, with new_pll=1 i have flickering lines > > > i'm running 2.6.33-rc7-git6 kernel, are this patchs already pull in main kernel > tree ? > > > do you need more informations ? (dmeg , drm debug? ) lspci -vnn Created attachment 33255 [details]
lspci , dell studio 15 laptop
(In reply to comment #10) > Created an attachment (id=33255) [details] > lspci , dell studio 15 laptop > what size panel is in your laptop? it's a 15 inch panel xrandr 1280x800 60.0 + 1280x720 59.9 1152x768 59.8 1024x768 59.9 800x600 59.9 848x480 59.7 720x480 59.7 640x480 59.4 Created attachment 33334 [details] [review] add lvds pll quirk for dell studio 15 I found your panel size on another bug. This patch should take care of it. i'll try the patch this night, thanks ! i have apply the patchs on last kernel git, it's works, no flickering line. Thanks again. Patch sent upstream |
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