Re: [gentoo-user] XOrg / XRanR segfault starting X

[james <garftd@verizon.net>]

On 08/18/2016 02:07 AM, J. Roeleveld wrote:
> On August 18, 2016 6:59:53 AM GMT+02:00, Dave Trombley <dave.trombley@gmail.com> wrote:
>> Hi all!
>>
>> New to Gentoo, just followed the handbook install for amd64 and then
>> for
>> XOrg.
>>
>>    I'm seeing the server segfault on 'startx'.   Here is the console
>> output (and I've attached the logfile).
>>
>>    X.Org X Server 1.17.4
>> Release Date: 2015-10-28
>> X Protocol Version 11, Revision 0
>> Build Operating System: Linux 4.4.6-gentoo x86_64 Gentoo
>> Current Operating System: Linux snow 4.4.6-gentoo #3 SMP PREEMPT Thu
>> Aug 18
>> 04:18:24 Local time zone must be set-- x86_64
>> Kernel command line: BOOT_IMAGE=/vmlinuz-4.4.6-gentoo
>> root=UUID=8cb564c3-38fb-4b05-bc60-eaccf543e3ab ro
>> Build Date: 17 August 2016  07:13:48PM
>>
>> Current version of pixman: 0.32.8
>>        Before reporting problems, check http://wiki.x.org
>>        to make sure that you have the latest version.
>> Markers: (--) probed, (**) from config file, (==) default setting,
>>        (++) from command line, (!!) notice, (II) informational,
>>        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
>> (==) Log file: "/var/log/Xorg.0.log", Time: Thu Aug 18 04:53:29 2016
>> (==) Using system config directory "/usr/share/X11/xorg.conf.d"
>> (II) [KMS] drm report modesetting isn't supported.
>> (EE)
>> (EE) Backtrace:
>> (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x58c856]
>> (EE) 1: /usr/bin/X (0x400000+0x190b09) [0x590b09]
>> (EE) 2: /lib64/libc.so.6 (0x7f34667ed000+0x33370) [0x7f3466820370]
>> (EE) 3: /usr/bin/X (RRSetChanged+0x50) [0x4f0c50]
>> (EE) 4: /usr/bin/X (RRScreenSetSizeRange+0x54) [0x4f5184]
>> (EE) 5: /usr/bin/X (xf86RandR12CreateScreenResources+0x295) [0x4b7d65]
>> (EE) 6: /usr/bin/X (0x400000+0xab130) [0x4ab130]
>> (EE) 7: /usr/bin/X (0x400000+0x3bff4) [0x43bff4]
>> (EE) 8: /lib64/libc.so.6 (__libc_start_main+0xf0) [0x7f346680d620]
>> (EE) 9: /usr/bin/X (_start+0x29) [0x426639]
>> (EE)
>> (EE) Segmentation fault at address 0xa0
>> (EE)
>> Fatal server error:
>> (EE) Caught signal 11 (Segmentation fault). Server aborting
>>
>>
>>   Any ideas?   I can't figure out why kernel modesetting isn't working
>> (the newer versions of Linux don't have explicit modesetting config
>> items
>> and the framebuffer drivers are totally disabled, as per the install
>> docs),
>> but the larger problem is that segfault.   Any ideas on how to even
>> start
>> to address this?
>>
>>   -David
>
> Few extra missing details.
>
> Which GPU are you using? I see both Intel and ATI.
> Can you provide your kernel config.
> Which Video drivers did you build with xorg?


lspci and 'lspci -v' among other hardware discovery tools might help you
get the firmware and exact kernel options needed for your kernel
built correctly.

I always put the video codes into the kernel, but some have success with
setting up those codes, via a loadable modules.

other tools:: 'lshw'

hth,
James