Strange problem with Haswell HD 4600 IGA and screen resolution
by Paul Livingston
All,
I recently built a new desktop machine using a Shuttle SZ87R6, an I7-4770S and a Dell U2713HM monitor. Did my initial HW burn-in and testing using a Fedora 20 KDE Spin Live CD (Kernel 3.11.10-301.fc20.x86_64 & KDE Systems settings v4.11.3) everything worked fine and the display resolution was 2560x1440 (native for the display). The last of the parts came in (HD for secondary storage) and I finished the build and did an install and a full system update (Kernel 3.14.8-200.fc20.x86_64 and KDE System Settings v4.11.10, along with ~=750MB of other updates) The display looked odd after rebooting and when I checked it was set to 1600x1200 (not only wrong resolution but wrong aspect ratio).
Checked the U2713HM OSD and found that while the max resolution was 2560x1440, current resolution was 1600x1200 and the interface was correctly reported (DVI-D). Verified the interconnection was DVI-D to DVI-D via a dual link DVI cable. Went back inside and rechecked the Display and Monitor settings in Systems Settings and maximum available resolution was 1600x1200 (which is what the display was set to). also noted that the Display and Monitor applet was reporting an HDMI interconnect vice the actual DVI-D. Ran xrandr from the command line and found that while 1920x1200 was shown as an available resolution (at least the correct aspect ratio), I could not set it to that using the command line. Scratched my head and spent several hours Googling to see if anyone else had run into this problem - no luck although there were some postings from roughly a year ago about people in the Win8 world having video problems with the HD 4600 IGA. I then spent some time on the Intel site, found several conflicting threads on HD 4600 capability and did an explicit update to the latest version of the Intel video stack for Linux. No change and still unable to reset video resolution or aspect ratio from within F20. BTW, going back to the earlier kernel is not really an option as I wanted the privilege escalation bug fix that came out in 3.14.6, however with the earlier kernel the resolution and aspect ratio is correct.
At this stage, I have pretty well established (at least in my own mind) that it is a SW vice a HW problem and it is entirely reproducible as when I reboot with the Live CD the 2560x1440 resolution comes up by default. While at this point I rather strongly suspect the Intel i915 driver and video stack, it could also be either a KDE or an xorg or a kernel issue and I really don' know where to file a bug report since I can't nail down which SW is screwing up or what to try next short of installing a low TDP video card, which I would rather avoid.
Any ideas, insight or suggestions would be most welcome.
Paul Livingston
pml(a)accokeekwoods.com
6 years, 11 months
Broadcom Wireless adapters and kernel updates
by Temlakos
Everyone:
Updating to the new kernel temporarily knocked out my wireless
connectivity on my Dell Inspiron 1545.
That is, until I executed:
# modprobe b43
Or, since I am a member of "wheel":
$ sudo modprobe b43
A few seconds after I issued that command, wireless was enabled, and the
connection I had long been using, re-activated itself.
Question: must I execute "modprobe xxx" with every kernel upgrade?
(By the way: it turns out that module "wl" is not necessary.)
Temlakos
6 years, 11 months
Re: Broadcom Wireless adapters and kernel updates [SOLVED]
by Temlakos
On 07/01/2014 01:58 PM, Paul Cartwright wrote:
> On 07/01/2014 01:32 PM, Temlakos wrote:
>> # echo b43 >> modules
>>
>> while is directory /etc
>>
>> Now I have a file called "modules" with the line "b43" in it.
>>
>> Temlakos
> I had to do that very thing for my Uncle... I showed him how to do the
> "modprobe b43" but he is 80 years old... so I found this to make it
> permanent & it did work..
>
>
The problem is: it doesn't seem to work for me. When I reboot, the
machine does not mention wireless at all. Not, that is, until I execute
"sudo modprobe b43" from a regular user prompt. Then it finds the
connection at once.
Temlakos
PS: next I'm going to try to load "wl" first, then "b43" and see what
happens.
Temlakos
6 years, 11 months
yum update took 99.99% of cpu
by JD
FC20.
I ran yum -y update.
After all the files were downloaded, the delta processing started. From
there on, all the way through to the end of
installation and cleanup, cpu was 99.99% taken up
by the update process, and the entire desktop became
unresponsive. I was unable to switch display windows,
of which I had 6.
The update had downloaded a total of 161MB, for a total
of about 30 updates, most of them wine related.
The machine is a dual core Intel running at 2.4GHz,
with 4GB ram.
6 years, 11 months
Problem with iptables
by JD
Hi all,
When I run /sbin/system-config-services
I see that iptables is enabled, and that
/etc/sysconfig/iptables contains the rules
I want.
However, after bootup, I open a terminal and
run iptables -L -n
and do not see those rules at all, and all
the rules are in "ACCEPT" state.
I have to resort to start iptables manually
in order to install the rules I have in
/etc/sysconfig/iptables.
So, what needs to be done to force iptables to run
and to use the rules I have in the iptables file?
6 years, 11 months
dconf-editor bug?
by Mike Wright
Hi all,
Using f20, gnome3.
Appears to be a bug in dconf-editor-0.18.0-2.fc20.
Drilling down:
org->gnome->desktop->wm->preferences: *auto-raise* has no effect.
Targeted window receives focus but doesn't raise to the top when mouse
or sloppy is selected.
If somebody else verifies it I'll bz it.
6 years, 11 months
Dell Inspiron 1545 touchpad suddenly s-l-o-w
by Temlakos
The latest updates--pushed yesterday--cause the touchpad on my Dell
Inspiron 1545 to run v-e-r-y s-l-o-w.
It was so bad, I tried to reinstall Fedora.
At first the reinstall restored the swift movement of the touchpad pointer.
But as soon as it took the updates, everything slowed down once again.
When I run in Setup, the touchpad cursor moves swiftly. But not when
Fedora is loaded.
What a time for this to happen. I simply cannot use it for any kind of
presentation in the shape it's in.
What package might I possibly be able to roll back until somebody fixes
the problem?
Temlakos
6 years, 11 months
f20 bridges not starting on boot
by Mike Wright
Hi all,
f20 fully updated. Not using NetworkManager.
There are an assortment of interfaces and bridges defined in my
network-scripts/ifcfg files. The interfaces come up but the bridges
don't. I have to manually restart networking to bring the bridges up
and bind the interfaces to them.
This had been working up through f18 (didn't try f19).
Any ideas on how to get them to be created on boot or why they don't?
Is this a candidate for a bug report?
Thanks for any help,
Mike Wright
6 years, 11 months
