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On Thu, Dec 29, 2016 at 14:52:08 +0000, J. Roeleveld wrote: |
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> On December 29, 2016 3:24:27 PM GMT+01:00, Alan Mackenzie <acm@×××.de> wrote: |
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> >Hi, Gentoo. |
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> >I'm having trouble with my kernel 4.4.26. It will do everything |
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> >expected of it except for running X Windows. |
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> >I've checked I've got the kernel configuration set up as described in |
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> >the gentoo wiki documents, unless I've overlooked something. |
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> >What happens is that I run "startx", and a little while later, the X |
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> >server reports that no screens are found. |
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> >More precisely, the following appears in Xorg.0.log: |
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> > KAVERI, KAVERI, HAWAII, HAWAII, HAWAII, HAWAII, HAWAII, HAWAII, |
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> > HAWAII, HAWAII, HAWAII, HAWAII, HAWAII, HAWAII |
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> >[ 47.952] (II) modesetting: Driver for Modesetting Kernel Drivers: |
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> >kms |
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> >[ 47.952] (--) using VT number 7 |
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> >[ 47.963] (II) [KMS] Kernel modesetting enabled. |
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> >[ 47.963] (WW) Falling back to old probe method for modesetting |
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> >[ 47.963] (EE) No devices detected. |
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> >[ 47.963] (EE) |
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> >Fatal server error: |
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> >[ 47.963] (EE) no screens found(EE) |
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> >[ 47.963] (EE) |
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> >Please consult the The X.Org Foundation support |
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> > at http://wiki.x.org |
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> > for help. |
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> >[ 47.963] (EE) Please also check the log file at |
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> >"/var/log/Xorg.0.log" for additional information. |
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> >[ 47.963] (EE) |
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> >Note the "No devices detected". |
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> >The corresponding piece of the working Xorg.0.log in my older kernel |
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> >is: |
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|
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> > KAVERI, KAVERI, HAWAII, HAWAII, HAWAII, HAWAII, HAWAII, HAWAII, |
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> > HAWAII, HAWAII, HAWAII, HAWAII, HAWAII, HAWAII |
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> >[ 188.705] (II) modesetting: Driver for Modesetting Kernel Drivers: |
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> >kms |
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> >[ 188.705] (--) using VT number 7 |
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|
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> >[ 188.713] (II) [KMS] Kernel modesetting enabled. |
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> >[ 188.713] (WW) Falling back to old probe method for modesetting |
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> >[ 188.713] (WW) VGA arbiter: cannot open kernel arbiter, no |
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> >multi-card support |
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> >[ 188.713] (II) RADEON(0): Creating default Display subsection in |
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> >Screen section |
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> > "Default Screen Section" for depth/fbbpp 24/32 |
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> >[ 188.713] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32 |
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> >[ 188.713] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes |
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> >(32 bpp pixmaps) |
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> >[ 188.713] (==) RADEON(0): Default visual is TrueColor |
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> >[ 188.713] (==) RADEON(0): RGB weight 888 |
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> >[ 188.713] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC) |
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> >[ 188.713] (--) RADEON(0): Chipset: "ATI Radeon HD 4550" (ChipID = |
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> >0x9540) |
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> >Needless to say, the kernel version is the sole difference between the |
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> >non-working 4.4.26 and the working 4.0.5. |
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> >Would somebody please help me track down this problem. Thanks! |
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> I ended up skipping 4.4 kernels as I had problems as well. |
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> Not with X, but hibernate wasn't working. |
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> 4.6 and 4.8 kernels do seem to work better. |
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> You could try a more recent one as well. |
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I found the problem whilst debugging the same symptoms in kernel 4.9.6. |
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I'd disabled "Enable PCI quirk workarounds" in General Setup. After |
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reenabling it, my X functions again. Don't ask me what brought me to |
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suspect this setting. |
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I mean, my PC is "relatively recent" (2009). PCI, even PCIe, is as old |
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as the hills. Surely they got the quirks out of the chipsets by 2009? |
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Apparently not! |
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> -- |
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> Joost |
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|
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-- |
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Alan Mackenzie (Nuremberg, Germany). |
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