Messages in this thread | | | Date | Thu, 24 Mar 2011 14:11:19 +0100 | Subject | Re: regression: GM45 on Dell Latitude E6400 display from 1440x900 to 1024x768 somewhere between 2.6.38-git2 and -git7 | From | Alessandro Suardi <> |
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On Thu, Mar 24, 2011 at 1:27 PM, Chris Wilson <chris@chris-wilson.co.uk> wrote: > On Thu, 24 Mar 2011 13:03:55 +0100, Alessandro Suardi <alessandro.suardi@gmail.com> wrote: >> OK - attaching in .tgz as they'd probably cross lkml size limits: > > Ok, the clue to the bizarre sizing is: > > [ 376.501] (WW) intel(0): No outputs definitely connected, trying again... > [ 376.501] (II) intel(0): Output LVDS1 connected > [ 376.501] (II) intel(0): Output VGA1 disconnected > [ 376.501] (II) intel(0): Output HDMI1 disconnected > [ 376.501] (II) intel(0): Output DP1 disconnected > [ 376.501] (II) intel(0): Output HDMI2 disconnected > [ 376.501] (II) intel(0): Output DP2 disconnected > [ 376.501] (II) intel(0): Output DP3 disconnected > [ 376.501] (II) intel(0): Output TV1 connected > [ 376.502] (II) intel(0): Using fuzzy aspect match for initial modes > [ 376.502] (II) intel(0): Output LVDS1 using initial mode 1024x768 +0+0 > [ 376.502] (II) intel(0): Output TV1 using initial mode 1024x768 +0+0 > > Transient false TV detection rears its ugly head again. (It's detected > during the 'working' setup but then disappears upon reprobing.) So X > choose the intersection of the available modes, 1024x768. But that > doesn't explain why the LVDS exists (it prints the EDID for it) but it > thinks it is disconnected. > > The difference in the dmesg is: > > ------------[ cut here ]------------ > WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0x92/0xa6() > Hardware name: Latitude E6400 > sysfs: cannot create duplicate filename > '/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/device' > Modules linked in: i915(+) drm_kms_helper drm i2c_algo_bit i2c_core video > Pid: 906, comm: modprobe Not tainted 2.6.38-git14 #1 > Call Trace: > [<ffffffff8103319b>] warn_slowpath_common+0x80/0x98 > [<ffffffff81033247>] warn_slowpath_fmt+0x41/0x43 > [<ffffffff811253d0>] sysfs_add_one+0x92/0xa6 > [<ffffffff81125ad6>] sysfs_do_create_link+0xf3/0x186 > [<ffffffffa000175f>] acpi_video_bus_add+0x982/0xc87 [video] > > which can be temporary fixed by reverting 9661e92c10a97752. But I don't > immediately see how that would cause the LVDS to be declared disconnected. > Can you add drm.debug=0xe to your grub kernel parameters and attach a > fresh dmesg?
The WARNING is a separate issue which popped up later.
Summarizing in this respect,
2.6.38-git2: no WARNING, correct display
2.6.38-git3..6: no tests performed due to kernel build failure
2.6.38-git7..11: no WARNING, wrong display
2.6.38-git12-13: no tests performed due to no time
2.6.38-git14: WARNING present, wrong display
Here you go with the drm debug dmesg for -git14... thanks !
--alessandro
"There's always a siren singing you to shipwreck"
(Radiohead, "There There") [unhandled content-type:application/octet-stream] | |