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Frank Steinmetzger <Warp_7@×××.de> wrote: |
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> Hello Fellows, |
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> |
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> My PC had been running on Intel graphics for 1½ years. Finally, I got |
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> myself an AMD R7 370 today and installed it (together with a second |
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> set of 16 Gigs of RAM ^^). |
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I'm using a R7 250. It has probably an other architecture, so I don't |
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know if my informations are useful for you. |
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> I could use some help getting it working properly. Here is what I did: |
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> yesterday I enabled VIDEO_CARDS=radeon in make.conf and rebuilt world |
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> with --changed-use. I also reconfigured the kernel to build the Intel |
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> driver as a module and to include the radeon module. |
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In my make.conf I defined |
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VIDEO_CARDS="radeon radeonsi" |
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IIRC this double definition is needed for some functions. |
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In my kernel config I defined |
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CONFIG_DRM_RADEON=y |
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CONFIG_DRM_RADEON_USERPTR=y |
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Btw.: I don't use a modular kernel, but I think that this makes no |
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difference. |
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> After installing the card, at first I only had a black screen and |
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> found out (thanks to #gentoo) that I needed a firmware blob. Once |
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> that was installed, I had a KMS-enabled VT on my AMD-connected |
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> monitor. Yay. |
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That's right. You need some firmware files. |
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> Now I'm stuck with a malfunctioning X (or more specifically, KDE, as |
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> it seems). I can run AwesomeWM just fine. But when I try to start |
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> KDE, I see the first of those fading-in progress icons and then the |
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> screen goes black. |
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> |
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> I created a test account to have a clean setup of KDE. This starts KDE |
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> partially, only up to a desktop with an empty panel. There is no mouse |
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> cursor to move around and no reaction to shortcuts such as Alt+F2. |
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> |
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> What else could I have missed in my migration from Intel to AMD? |
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> eselect opengl only shows the xorg-x11 option. I had to comment out a |
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> modeline which I set manually in xorg.conf. |
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It's ok that eselect opengl only shows the xorg-x11 option. Same on my |
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system. |
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> See attached: |
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> - /etc/X11/xorg.conf.d/gfx.conf |
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> - /var/log/Xorg.0.log from running startx with .xinitrc containing |
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> startkde. You can see those three blocks of modelines at the end. At |
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> around or just before this point the screen goes dark. |
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I really don't think that you need any modeline. Your monitor provides |
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an EDID data block that contains all needed information. As long as the |
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monitor has no firmware bug, this should be sufficient. |
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You probably also don't need a xorg.conf. But this depends on your card |
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and on the options you wanna use. My xorg.conf contains only a device |
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section and nothing else. |
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Section "Device" |
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Identifier "ATI-Card" |
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Driver "radeon" |
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Option "TearFree" "on" |
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Option "ShadowPrimary" "off" |
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EndSection |
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As you can see, there is also an TearFree option for Radeon Cards. |
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When I don't disable ShadowPrimary, then X has some rendering |
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glitches. |
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And last but not least, it probably may be important that you |
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compile xf86-video-ati with the glamor USE flag. I'm using a stable |
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gentoo system with only a few exceptions. xf86-video-ati is one of |
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it, because version 7.6.1 runs much smoother with my card than the |
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stable version. |
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x11-drivers/xf86-video-ati-7.6.1 glamor udev |
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There is also a gentoo radeon wiki available on the net. I used it |
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to get my card working. I can't remember the URL and I'm too lazy |
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to search for it right now, sorry for that. ;-) |
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-- |
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Regards |
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wabe |
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