Xorg not starting: no screens found (intel driver + i3-4130T)

[Kevin Oberman]

On Sun, Mar 26, 2017 at 10:52 AM, Theron <theron.tarigo at gmail.com> wrote:

> On 03/26/17 07:28, - - wrote:
>
>> Hello Conrad & All,
>>
>> Thank you for the quick response.
>>
>> Running `sysctl kern.vty` suggested that vt was being used. However,
>> clearly something was not right bases on the log section that you
>> highlighted, so I added `kern.vty=vt` to `/boot/loader.conf` and that has
>> partially resolved the problem!
>>
>> I also added `kld_list="i915kms.ko"` to `/etc/rc.conf` and removed my
>> xorg.conf file...
>>
>> I am now getting `AIGLX: Screen 0 is not DRI2 capable`. (Please see
>> Xorg.0.log below...)
>>
>> `glx info | grep Device` indicates that llvmpipe is being used
>>
>> in contrast (on my Lubuntu partition, that I am using as a stop-gap
>> measure) I get:
>>
>> `glx info | grep Device` outputs `MESA DRI Intel (R) Haswell (0x41e)`
>>
>> If I specify to the intel driver, I get the no screens message that I
>> mentioned previously. (I have tried with both the intel driver config
>> snippet below and without it.)
>>
>> Section "Device"
>>      Identifier "Card0"
>>      Driver "intel"
>> EndSection
>>
>> I have spent some time RTM and searching through the forums, but have
>> been unable to solve the follow-up problem as of yet.
>>
>> Some of the forum posts seemed to suggest it was something to do with
>> device permissions but my regular user is added to the video and wheel
>> groups.
>>
>> Another thing I tried was restricting the resolution to 1920x1080 and
>> below because I read that resolutions greater than this could be
>> problematic.
>>
>> I have tried connecting to my monitor with various cables, just in case
>> that was an issue...
>>
>> Could anyone help with this stage of the troubleshooting process?
>>
>> Thank you & regards,
>> Matthew
>>
> Is `kld_list="i915kms.ko"` correct?  I have simply [...]" i915kms" (no
> extension).
> Make sure i915kms is indeed loaded:
> `kldstat` | grep i915`
> If this is indeed the problem and you do not want to reboot just to apply
> the change in rc.conf, load the module manually:
> `kldload i915kms`
>
> "No devices detected" indicates that Xorg cannot communicate with the
> module responsible for the GPU hardware.  It has nothing to do with regular
> user permissions or monitor connectivity.  Xorg on a headless system with a
> working GPU but no display outputs would be expected to give a "no screens"
> error but shouldn't have any problem finding the (GPU) device.
>
> Theron
>

And, while this is almost certainly not the primary issue, be sure that
only the KMS driver is loaded. You should not have i915.ko loaded. I think
this has been fixed, but it has been an issue with the latest version
update.
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman at gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683