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Old 02-03-2014, 04:30 PM   #1
Joe Soap
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Display not detected, wrong resolution: 82945G/GZ & Acer X203H


I recently installed Wheezy on my desktop. The monitor is an Acer X203H with a resolution of 1600x900. The graphics controller is an Intel Corporation 82945G/GZ.

However, in System Tools -> Preferences -> System Settings -> Displays, the monitor is given as "Unknown" and the resolution is set to 1280 x 1024.

How can I get it to recognise the controller/monitor and set it to the right resolution?
 
Old 02-03-2014, 06:00 PM   #2
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Are you sure that the correct Intel driver is loaded? Behavior like this is usually caused by using the vesa driver instead.
 
Old 02-03-2014, 11:33 PM   #3
Joe Soap
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That may be the problem. This is the output from lshw -c video:
Code:
 *-display UNCLAIMED     
       description: VGA compatible controller
       product: 82945G/GZ Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 02
       width: 32 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:fdf00000-fdf7ffff ioport:ff00(size=8) memory:d0000000-dfffffff memory:fdf80000-fdfbffff
So it seems as if no driver is loaded... How do I identify and load the driver?
 
Old 02-04-2014, 04:36 AM   #4
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Please post the output of [code]lsmod | grep i915[code]
 
Old 02-04-2014, 11:26 PM   #5
Joe Soap
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lsmod | grep i915 outputs nothing ...

Here's the complete output from lsmod:
Code:
Module                  Size  Used by
fuse                   52184  1 
btrfs                 489167  0 
crc32c                 12576  1 
libcrc32c              12394  1 btrfs
zlib_deflate           21318  1 btrfs
ufs                    57656  0 
qnx4                   12992  0 
hfsplus                70463  0 
hfs                    40744  0 
minix                  26995  0 
ntfs                  162381  0 
vfat                   17116  0 
msdos                  12829  0 
fat                    44497  2 msdos,vfat
jfs                   134977  0 
xfs                   524041  0 
reiserfs              168016  0 
ext3                  134152  0 
jbd                    47281  1 ext3
ext2                   49826  0 
efivars                17620  0 
dm_mod                 57362  0 
parport_pc             22036  1 
ppdev                  12651  0 
lp                     12797  0 
parport                31254  3 lp,ppdev,parport_pc
bnep                   17288  2 
rfcomm                 28626  0 
bluetooth             103791  10 rfcomm,bnep
rfkill                 18516  3 bluetooth
binfmt_misc            12813  1 
nfsd                  173890  2 
nfs                   265921  0 
nfs_acl                12463  2 nfs,nfsd
auth_rpcgss            32143  2 nfs,nfsd
fscache                31978  1 nfs
lockd                  57277  2 nfs,nfsd
sunrpc                143904  6 lockd,auth_rpcgss,nfs_acl,nfs,nfsd
loop                   17810  0 
joydev                 17010  0 
iTCO_wdt               16945  0 
iTCO_vendor_support    12632  1 iTCO_wdt
snd_hda_codec_realtek   142274  1 
drm_kms_helper         22738  0 
drm                   146387  1 drm_kms_helper
thermal_sys            17752  0 
i2c_algo_bit           12713  0 
snd_hda_intel          21786  2 
snd_hda_codec          63477  2 snd_hda_intel,snd_hda_codec_realtek
psmouse                59609  0 
snd_hwdep              12943  1 snd_hda_codec
rng_core               12580  0 
snd_pcm                53461  2 snd_hda_codec,snd_hda_intel
snd_page_alloc         12867  2 snd_pcm,snd_hda_intel
evdev                  17225  3 
pcspkr                 12515  0 
snd_seq                39512  0 
snd_seq_device         13016  1 snd_seq
snd_timer              22356  2 snd_seq,snd_pcm
snd                    42722  12 snd_timer,snd_seq_device,snd_seq,snd_pcm,snd_hwdep,snd_hda_codec,snd_hda_intel,snd_hda_codec_realtek
i2c_i801               12670  0 
i2c_core               19116  4 i2c_i801,i2c_algo_bit,drm,drm_kms_helper
serio_raw              12803  0 
soundcore              12921  1 snd
ext4                  306996  1 
crc16                  12327  2 ext4,bluetooth
jbd2                   52330  1 ext4
mbcache                12938  3 ext4,ext2,ext3
usbhid                 31554  0 
hid                    64284  1 usbhid
sg                     21476  0 
sr_mod                 17468  0 
sd_mod                 35425  3 
cdrom                  34813  1 sr_mod
crc_t10dif             12332  1 sd_mod
uhci_hcd               22337  0 
ata_generic            12439  0 
ehci_hcd               35509  0 
r8169                  41830  0 
ata_piix               25271  2 
mii                    12595  1 r8169
libata                125014  2 ata_piix,ata_generic
usbcore               104555  4 ehci_hcd,uhci_hcd,usbhid
scsi_mod              135037  4 libata,sd_mod,sr_mod,sg
usb_common             12338  1 usbcore
 
Old 02-05-2014, 04:31 AM   #6
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What happens if you run
Code:
modprobe i915
Is this a custom kernel or the stock Debian one?
 
Old 02-05-2014, 11:24 PM   #7
Joe Soap
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I get this reply:

Code:
ERROR: could not insert 'i915': No such device

Last edited by Joe Soap; 02-05-2014 at 11:25 PM.
 
Old 02-06-2014, 05:37 AM   #8
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So, is this a custom kernel or a stock Debian kernel? If this is a stock Debian kernel there should be a i915 module.
 
Old 02-06-2014, 09:17 AM   #9
Joe Soap
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Sorry for my incomplete reply.

It is a stock kernel (afaik). I downloaded Jessie from the internet, burnt the image to cd and installed it.
 
Old 02-07-2014, 04:38 AM   #10
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That is weird, Jessie should have the i915 drivers installed by default. I am out of clues for now what is getting wrong on your system.
 
Old 02-07-2014, 05:04 AM   #11
Joe Soap
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Hey, I appreciate the effort. Thanks a lot. I'll keep digging & hopefully will come up with something.
 
Old 02-07-2014, 05:39 AM   #12
TobiSGD
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I hope that you will figure out what is wrong. Please post back here if you find a solution.
 
Old 02-07-2014, 05:56 AM   #13
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Will do.
 
Old 02-07-2014, 04:18 PM   #14
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Another thought, are you running through a KVM switch or on very old video hardware? Sounds a problem I had with fedora using a cheap 4-cpu kvm switch, and the kvm apparently blocked the monitor EDID from getting to the computer, so the monitor always showed as a generic vga monitor.
 
Old 02-07-2014, 05:17 PM   #15
Joe Soap
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I had that problem with the KVM switch a couple of years ago. The KVM switch has since been discarded.

As for the hardware, yeah, it's got a bit of age, but until this latest install I had no problem with the display resolution. A few days ago I tried Knoppix and the resolution was spot on.
 
  


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