Red Hat Bugzilla – Bug 220466
i810 black screen on Core 2 Duo Thinkpad X60 when brightness up
Last modified: 2009-03-02 16:01:19 EST
Description of problem:
I am having black screen when I hit Fn-Home (Brightness up) on my Thinkpad
X60. The birghtness up hotkey works fine in console and I am able to Ctrl-Alt-F7
back to Xorg. But It will not work under Xorg and Xorg is still running.
Changing run level from 3 to 5 back and forward will get the screen back.
The intel driver kinda fix the black screen problem. When I hit Fn-Home, it goes
black screen, by release the key Home then Fn. I am able get the screen back.
But it hangs up or black screen when I try to restart or shutdown from GDM.
The vesa driver works still but without Xv.
I try the following without luck.
* enable the acpi video.conf
* update driver to 1.7.2 on but i810 and modesetting
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. On GDM or login to Xorg after boot
2. Hit Fn-Home
The vesa driver works still but without Xv.
It also happen to RHEL 5 Beta 2
Thanks for the bug report. We have reviewed the information you have provided
above, and there is some additional information we require that will be helpful
in our diagnosis of this issue.
Please attach your X server config file (/etc/X11/xorg.conf) and X server log
file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file
attachments using the bugzilla file attachment link below.
Could you please also try to run without any /etc/X11/xorg.conf whatsoever and
let X11 autodetect your display and video card? Attach to this bug
/var/log/Xorg.0.log from this attempt as well, please.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 145003 [details]
Xorg log file
Created attachment 145004 [details]
Xorg config file
Sorry for this late reply, 7 out of the 8 internet backbone were out of
service cuz the earthquake in Taiwan. I was not able to get on bugzilla, b4 i
get a connection time out. Here are the files, I hope this help to fix the
Thanks for your attention
Created attachment 145025 [details]
Xorg log file without xorg.conf
It looks like the brightness up key has been remapped to the "Switch display"
key (toggle between CRT/LCD/both). We have noticed this on T60 laptops, which
run a very similar card:
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/940GML Express
Integrated Graphics Controller (rev 03)
*** Bug 224170 has been marked as a duplicate of this bug. ***
I see the same problem on F7 test 3.
*** Bug 220022 has been marked as a duplicate of this bug. ***
Isn't this DUP of bug 236500?
Doesn't look quite like a dup to me. On a Thinkpad, the symptoms are different
to the Dell symptoms reported in bug 236500, even though the graphics hardware
seems similar in both cases.
This problem (on my X60) went away for me with updates and/or a change to the
'intel' Xorg driver. I'm running Fedora rawhide, and was seeing this before.
Really, driver intel does not blank when I click Fn+Bright keys. But the
switching is not smoothly (~2sec black screen, than ~1.5-2 sec brigth rises to
need value). The gnome-power-manager works fine (without any delay on
switching). I consider it inconvenient for me.
BTW, I still have this problem. I have to ensure that video.ko isn't loaded.
Yes, the driver "intel" doesn't exhibit this problem, but the driver "intel"
also doesn't seem to support dual-head mode so it's a non-starter. I see this
problem on an up-to-date Fedora 7 system running on a Thinkpad T60.
Fedora Core 6 is no longer supported, could you please reproduce this with the
updated version of the currently supported distribution (Fedora 7, 8, or
Rawhide)? If this issue turns out to still be reproducible, please let us know
in this bug report. If after a month's time we have not heard back from you, we
will have to close this bug as CANTFIX.
Setting status to NEEDINFO, and awaiting information from the reporter.
[This is mass-filed message to all open Fedora Core 6 bugs related to Xorg or
Gecko. If you see any other reason, why this bug shouldn't be closed, please,
comment on it here.]
Reporter, could you please reply to the previous question? If you won't reply in
one month, I will have to close this bug as INSUFFICIENT_DATA. Thank you.
I can confirm that this problem still exists on Fedora 7.
I have switched to the intel driver from i810. It works in the F-7.
Yes, but as I said in comment #16, the intel driver cannot operate dual-head.
(In reply to comment #21)
> Yes, but as I said in comment #16, the intel driver cannot operate dual-head.
I did not test it, but the manpages indicate, that this should work.
Look for randr in man xorg.conf and man intel
xrandr allows you to have a single virtual screen that crosses over onto two
displays, but it doesn't let you have two screens. Using xrandr, the gnome
panel moves over to the VGA screen, and the two "displays" share :0.0 instead of
putting the LCD on :0.0 and the VGA on :0.1. Apparently this is called "zaphod
mode", and the intel driver seems not to support it. Thanks, but no thanks.
Well, it's unlikely that i810 will get any better at handling the brightness
keys... And yeah, unfortunately zaphod mode isn't supported in the intel
driver, but there is an upstream bug for it, so we might fix it for 2.3.
I posted my bug on this issue under
An "upstream bug" has been alluded two on several threads related to this, but
nobody is posting the location to this bug so I can put a tickler on it. This
error is one of three primary failures which forced me back to Windows from my
Derek, I think intel can handle dual-head pretty well, only you don't use
Xinerama and stuff but you have to play with xrandr command. Are you able to
switch to "intel" driver, please?
The Intel driver has been a source of random crashes and freezes for me, so it's
hard to consider it as usable.
Sorry I didn't respond earlier to comment #26, but see Comment #24. The Intel
driver doesn't support zaphod mode, which is exactly the feature I'm looking
for, and why I have to use the i810 driver. There's no way to use xrandr with
the intel driver to get a :0.0 and :0.1 screen, both with gnome panel, and
having them with separate sets of windows/geometries/etc.
Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
Just curious -- does anybody see this bug still in the alive?
I still see it, but I'm still on Fedora 7. I've been on the road too much to have time to update my laptop. MAYBE I'll update to F9 in a couple weeks, but I suspect I wont get to it until the end of October. So if you don't mind could we keep this bug open until then?
just to keep this alive
ping? any development?
Since there are insufficient details provided in this report for us to investigate the issue further, and we have not received feedback to the information we have requested above, we will assume the problem was not reproducible, or has been fixed in one of the updates we have released for the reporter's distribution.
Users who have experienced this problem are encouraged to upgrade to the latest update of their distribution, and if this issue turns out to still be reproducible in the latest update, please reopen this bug with additional information.
Closing as INSUFFICIENT_DATA.