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dennisn Tux's lil' helper
Joined: 01 Aug 2004 Posts: 119 Location: Montreal, Canada
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Posted: Mon Apr 29, 2013 9:50 pm Post subject: [Solved] Radeon X700 KMS Not Working |
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I still don't have KMS working on boot, with my "older" ATI Radeon Mobility X700 (rv410) video card. I am still forced to disable modesetting (radeon.modeset=0, with the 3.9.0 kernel), and then reload the module with modesetting=1 afterwards in order to use the newer xorg's.
With modesetting enabled (the default), my system will always hang, and the last thing shown on screen is something from udev waiting to populate /dev. Keyboard input is ignored and I'm forced to 4-second-power-button-off.
Also, if I keep modesetting disabled, and not even run X -- just remain in text mode -- I can't resume properly after suspending my laptop. Upon powering back up, the screen is either black or garbled with vertical lines. Keyboard works, and I can reboot, but the video isn't working.
Sigh.
Last edited by dennisn on Fri May 03, 2013 2:26 pm; edited 1 time in total |
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Ant P. Watchman
Joined: 18 Apr 2009 Posts: 6920
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Posted: Tue Apr 30, 2013 12:40 am Post subject: |
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Post the output of:
Code: | ls -l /lib/firmware/radeon
emerge -s radeon-ucode |
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chithanh Developer
Joined: 05 Aug 2006 Posts: 2158 Location: Berlin, Germany
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Posted: Tue Apr 30, 2013 9:02 am Post subject: |
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rv410 does not need external firmware.
Is DRM_RADEON in your kernel config set to "m" or to "y"? |
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dennisn Tux's lil' helper
Joined: 01 Aug 2004 Posts: 119 Location: Montreal, Canada
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Posted: Tue Apr 30, 2013 12:10 pm Post subject: |
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Code: | CONFIG_DRM_RADEON=m
CONFIG_DRM_RADEON_UMS=y
# CONFIG_FB_RADEON is not set |
I have to set it to =m now, and enable the new DRM_RADEON_UMS option, in order to unload/reload the module with modesetting after booting. (It can't boot with modesetting enabled. And I need modesetting for xorg.) |
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chithanh Developer
Joined: 05 Aug 2006 Posts: 2158 Location: Berlin, Germany
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Posted: Tue Apr 30, 2013 5:27 pm Post subject: |
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If DRM_RADEON=m then KMS enabled does not matter for boot. KMS will only be activated when udev loads the radeon kernel module. So blacklist it in /etc/modprobe.d to achieve the same effect. |
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dennisn Tux's lil' helper
Joined: 01 Aug 2004 Posts: 119 Location: Montreal, Canada
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Posted: Tue Apr 30, 2013 9:16 pm Post subject: |
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Ah yea. With DRM_RADEON=y (builtin) it fails to boot (to reach the init stage). The last message printed on screen is: "radeon 0000:01:00.0: radeon: using MSI.", or "[drm] Driver supports precise vblank timestamp query." if I set radeon.msi=0. I think the next printed message /should/ be "[drm] radeon: irq initialized."?
But modesetting *does* work, if I load the module later on! After init'ing, when I "modprobe radeon modeset=1", dmesg says:
Code: | Console: switching to colour frame buffer device 160x50
radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
radeon 0000:01:00.0: registered panic notifier
[drm] Initialized radeon 2.30.0 20080528 for 0000:01:00.0 on minor 0 |
Maybe the order that the kernel loads things (radeon before fbcon?) is an issue? :s |
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VoidMage Watchman
Joined: 14 Oct 2006 Posts: 6196
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Posted: Tue Apr 30, 2013 9:19 pm Post subject: |
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I found it convenient to simply have CONFIG_FRAMEBUFFER_CONSOLE=y. |
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dennisn Tux's lil' helper
Joined: 01 Aug 2004 Posts: 119 Location: Montreal, Canada
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Posted: Tue Apr 30, 2013 9:29 pm Post subject: |
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I have that too. (Neither way makes much of a difference for me though.)
Did you have similar problems? |
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kernelOfTruth Watchman
Joined: 20 Dec 2005 Posts: 6111 Location: Vienna, Austria; Germany; hello world :)
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VoidMage Watchman
Joined: 14 Oct 2006 Posts: 6196
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Posted: Wed May 01, 2013 6:44 pm Post subject: |
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dennisn wrote: | I have that too. (Neither way makes much of a difference for me though.)
Did you have similar problems? |
No and my card is significantly older than yours.
Pastebin your kernel config and post kernel boot line. |
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dennisn Tux's lil' helper
Joined: 01 Aug 2004 Posts: 119 Location: Montreal, Canada
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Posted: Fri May 03, 2013 2:05 pm Post subject: |
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I got booting with KMS working by undoing kernel patch:
Code: | 2099810f903caa1920f3ef6014fb7f36e4786490
drm/radeon: enable pci bus mastering after card is initialised (v2) |
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=2099810f903caa1920f3ef6014fb7f36e4786490
I got resuming-from-suspend to work by installing app-laptop/radeontool and executing the following after resuming from a suspend:
Code: | radeontool light off
radeonreg regset 0x00000284 0x1bd34208
radeonreg regset 0x000002d0 0x003c00a1
radeonreg regset CL:03 0x001c0007
radeonreg regset CL:04 0x0002004a
radeonreg regset CL:05 0x0002004a
radeonreg regset CL:06 0x0002004a
radeontool light on |
(You can find what those values probably should be while it's working with "radeonreg regmatch CL:03" etc.) |
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