Bristol Digest, Vol 531, Issue 3

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Today's Topics:

1. Intel integrated video on HP Pavilion DV2000 not recognized.
(Simon Iremonger (bblug))


----------------------------------------------------------------------

Message: 1
Date: Thu, 02 Jan 2014 09:15:42 +0000
From: "Simon Iremonger (bblug)" <bblug@iremonger.me.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: [bristol] Intel integrated video on HP Pavilion DV2000 not
recognized.
Message-ID: <52C52E3E.1090406@iremonger.me.uk>
Content-Type: text/plain; charset=ISO-8859-1

Dear All,


OK, This is an oddity to me... Any ideas =).

On HP Pavilion DV2000 of the variety with Intel graphics,
trying to use 64bit Debian Wheezy, for example, just won't
recognize the (apparently supported) onboard intel graphics,
instead using the VESA driver which is a pain.


The PCI devices:-
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00
[VGA controller])
Subsystem: Hewlett-Packard Company Device 30b2
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME,
943/940GML Express Integrated Graphics Controller (rev 03)
Subsystem: Hewlett-Packard Company Device 30b2

NB: I NOTE that these are somehow TAGGED as HP devices in 'lspci -v'
above...! Also, their actual IDs:-

00:02.0 0300: 8086:27a2 (rev 03) (prog-if 00 [VGA controller])
Subsystem: 103c:30b2
00:02.1 0380: 8086:27a6 (rev 03)
Subsystem: 103c:30b2

NB: Looking about at other people's lspci for 945GM chipset users,
they seem to have 27a2 and 27ae instead, no '27a6' as above.
I've even rebuilt the xserver-xorg-video-intel driver and changed
the PCI IDs its' expecting as above with no luck.

Relevant bits of xorg log:-

======================================================================
X.Org X Server 1.12.4
Release Date: 2012-08-27
[....]
(--) PCI:*(0:0:2:0) 8086:27a2:103c:30b2 rev 3, Mem @ 0xd4300000/524288,
0xc0000000/268435456, 0xd4400000/262144, I/O @ 0x00001800/8
(--) PCI: (0:0:2:1) 8086:27a6:103c:30b2 rev 3, Mem @ 0xd4380000/524288
[....]
(II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
GM45, 4 Series, G45/G43, Q45/Q43, G41, B43, HD Graphics,
HD Graphics 2000, HD Graphics 3000, HD Graphics 2500,
HD Graphics 4000, HD Graphics P4000, HD Graphics 4600,
HD Graphics 5000, HD Graphics P4600/P4700, Iris(TM) Graphics 5100,
HD Graphics 4400, HD Graphics 4200, Iris(TM) Pro Graphics 5200
(--) using VT number 8

(EE) No devices detected.

Fatal server error:
no screens found
======================================================================

Also, kernel log doesn't tell me much... Upon reloading the
'i915' module the laptop lcd brightness resets, but the 'dmesg'
log doesn't indicate explicitly that mode-setting is available
or a PCI device was actually recognized at kernel level.
Have tried a newer backported kernel 3.11.8-1~bpo70+1 with no
apparent effect.



I notice somebody else supposedly had the intel driver loaded in
x.org and then get no screens on similar laptop:-
https://ubuntuforums.org/showthread.php?t=1451007#post9101092

And, I've not got far finding out exactly when this happens...


Now...
(a) Is it known for HP to mess about with ids/presentation of intel
bits so they don't recognize easily -- or otherwise are you having
VESA driver on some other intel chipset integrated graphics machine?

(b) Is there something else going on here?

(c) How would I debug this further? -- add more warnings/printouts in
the driver code that appear in log, maybe ????



With many thanks in advance,

--Simon



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