Strange cyan-colored vertical line on my screen.

maschelsea · 02-13-2017, 08:58 PM

I've got a strange cyan-colored line on my screen. It's just to the right of center, and it comes goes. I see it sometimes when my terminal is maximized (xfce4-terminal) and I saw it on my screensaver. On the screensaver, it ran from top of the screen all the way to the bottom. In this window (seamonkey) I see it on the line that says "Post New Thread". I would really like to be rid of it. My first thought was to look in /var/log/Xorg.0.log. The only thing I saw in there was fbdev:

Code:

root@caitlyn:/etc/rc.d# grep EE /var/log/Xorg.0.log
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[303014.642] (EE) Failed to load module "fbdev" (module does not exist, 0)

I wanted to restart X, but there was no /etc/init.d/xdm to restart, nor anything relevant in /etc/rc.d. I still don't know how to manually restart X. I have modprobed fbdev, but I don't really think that that missing is causing this issue. I did add 'modprobe fbdev" to the end of /etc/rc.d/rc.modules.local, so the next time I restart this computer it should load automatically.

Skaendo · 02-13-2017, 09:26 PM

Ctrl+Alt+Bksp should restart X. It will at least drop you back to the console where you will have to "startx" again, but if you have any login managers it will bring you back to that.

maschelsea · 02-13-2017, 10:05 PM

I did that, but I'm still seeing the fbdev module missing in the Xorg log:

Code:

root@caitlyn:~# grep EE /var/log/Xorg.0.log
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[344240.950] (EE) Failed to load module "fbdev" (module does not exist, 0)
root@caitlyn:~# modprobe fbdev
root@caitlyn:~# lsmod | grep fbdev
root@caitlyn:~#

So why isn't my fbdev module being loaded, and why does it not report an error when I try to modprobe it?

maschelsea · 02-13-2017, 10:09 PM

The module DOES exist:

Code:

root@caitlyn:/lib/modules/4.4.38# pwd
/lib/modules/4.4.38
root@caitlyn:/lib/modules/4.4.38# find -name fbdev
./kernel/drivers/video/fbdev

Skaendo · 02-13-2017, 10:24 PM

Quote:

Originally Posted by maschelsea

The module DOES exist:

Code:

root@caitlyn:/lib/modules/4.4.38# pwd
/lib/modules/4.4.38
root@caitlyn:/lib/modules/4.4.38# find -name fbdev
./kernel/drivers/video/fbdev

I don't know how much more help I can be, but more info might be needed for someone that can. Like. are you running a full install, are you running 14.2 or current, what kind of video is it (Intel/nVidia/etc). As much info that you can that may be relevant.

maschelsea · 02-13-2017, 10:56 PM

I am running a full Slackware64 14.2 install. Here is my lspci output:

Code:

root@caitlyn:~# lspci
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation C220 Series Chipset Family H81 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)

Here is my lsmod output:

Code:

root@caitlyn:~# lsmod
Module                  Size  Used by
ipv6                  334857  22
cfg80211              524905  0
fuse                   84394  3
hid_generic             1551  0
usbhid                 38479  0
uas                    14098  0
hid                   107579  2 hid_generic,usbhid
usb_storage            55654  2 uas
eeepc_wmi               5367  0
asus_wmi               19229  1 eeepc_wmi
sparse_keymap           4048  1 asus_wmi
ppdev                   6286  0
rfkill                 18649  2 cfg80211,asus_wmi
i2c_dev                 6188  0
r8169                  73063  0
evdev                  13220  21
mii                     5143  1 r8169
coretemp                6780  0
hwmon                   4199  2 coretemp,asus_wmi
intel_rapl             11044  0
iosf_mbi                3821  1 intel_rapl
x86_pkg_temp_thermal     5609  0
intel_powerclamp        8914  0
kvm_intel             160251  0
kvm                   501453  1 kvm_intel
irqbypass               3519  1 kvm
crct10dif_pclmul        5461  0
crc32_pclmul            3238  0
crc32c_intel           13564  0
psmouse               111804  0
serio_raw               5146  0
i2c_i801               16909  0
wmi                     9259  1 asus_wmi
thermal                10076  0
fan                     4323  0
snd_hda_codec_realtek    72730  1
snd_hda_codec_generic    61189  1 snd_hda_codec_realtek
i915                 1173199  3
parport_pc             21558  0
parport                37823  2 ppdev,parport_pc
battery                13400  0
8250_fintek             3214  0
snd_hda_intel          29531  3
snd_hda_codec         108141  3 snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_intel
processor              26834  0
drm_kms_helper        118812  1 i915
fjes                   21479  0
drm                   322966  5 i915,drm_kms_helper
intel_gtt              13810  1 i915
agpgart                31796  2 drm,intel_gtt
button                  5722  1 i915
video                  27709  2 i915,asus_wmi
tpm_infineon            8104  0
tpm_tis                11588  0
tpm                    35737  2 tpm_tis,tpm_infineon
i2c_algo_bit            5962  1 i915
fb_sys_fops             1730  1 drm_kms_helper
shpchp                 26296  0
mei_me                 18627  0
mei                    62479  1 mei_me
syscopyarea             3458  1 drm_kms_helper
xhci_pci                4873  0
sysfillrect             3950  1 drm_kms_helper
sysimgblt               2608  1 drm_kms_helper
xhci_hcd              116990  1 xhci_pci
i2c_core               47925  6 drm,i915,i2c_i801,i2c_dev,drm_kms_helper,i2c_algo_bit
snd_hda_core           52370  4 snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep               6656  1 snd_hda_codec
snd_pcm                92802  3 snd_hda_codec,snd_hda_intel,snd_hda_core
snd_timer              22109  1 snd_pcm
snd                    69051  12 snd_hwdep,snd_timer,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
soundcore               6876  1 snd
ehci_pci                4285  0
ehci_hcd               44114  1 ehci_pci
lpc_ich                14738  0
loop                   21270  0
root@caitlyn:~#

aragorn2101 · 02-14-2017, 02:42 AM

Hi,

For Xorg modules/drivers check the content of: /usr/lib64/xorg/modules/drivers/

But, I think the fbdev message is pretty harmless since you successfully started X. It could be a hardware related issue; screen or graphic card. Do you have a graphic card or you using only the Intel graphics capabilities?

maschelsea · 02-14-2017, 03:24 PM

I did not order a second graphics card put in when I ordered this machine, so I assume that it's only the onboard intel stuff. Good to know that I don't have to worry about the fbdev module...

It's not there:

Code:

root@caitlyn:~# ls /usr/lib64/xorg/modules/drivers/fbdev*
/bin/ls: cannot access '/usr/lib64/xorg/modules/drivers/fbdev*': No such file or directory

rob.rice · 02-14-2017, 05:36 PM

it could be your monitor or your video adapter saying
GOOD BY FOR EVER !
try another monitor or that monitor on another computer
I doubt this is a software problem

hitest · 02-14-2017, 05:39 PM

Quote:

Originally Posted by rob.rice

it could be your monitor or your video adapter saying
GOOD BY FOR EVER !
try another monitor or that monitor on another computer
I doubt this is a software problem

Agreed.

SCerovec · 02-15-2017, 03:01 PM

+1 (take it from a PC-repairs-man)

maschelsea · 02-15-2017, 06:43 PM

I don't see the cyan line all the time. Like right now on this page I can only see it bisecting the dark blue rects just above this text box. It's probably the monitor. I was hoping it was something more easily repairable, but I only paid $100 for this monitor, and since I would use it until it died completely, and it's a ton of trouble to fit any other monitor into the space this one is occupying, I'll just assume that the monitor is going bad.

MikelN · 02-16-2017, 12:10 AM

To me this sounds like broken video memory. If you can try another gfx-card to see if things change.

orbea · 02-16-2017, 12:37 AM

I have a similar issue, but its red lines and certainly that my monitor is just old...

aragorn2101 · 02-16-2017, 02:50 AM

Quote:

Originally Posted by rob.rice

it could be your monitor or your video adapter saying
GOOD BY FOR EVER !
try another monitor or that monitor on another computer
I doubt this is a software problem

Agreed as well.

I have an old laptop from 2010 which shows similar effects.