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Chapter 53. Desktop

Firefox 60.1 ESR fails to start on IBM Z and POWER

JavaScript engine in the Firefox 60.1 Extended Support Release (ESR) browser was changed. As a consequence, Firefox 60.1 ESR on IBM Z and POWER architectures fails to start with a segmentation fault error message. (BZ#1576289, BZ#1579705)

GV100GL graphics cannot use correctly more than one monitor

Due to missing signed firmware for the GV100GL graphics, GV100GL cannot have more than one monitor connected. When a second monitor is connected, it is recognized, and graphics set the correct resolution, but the monitor stays in power-saving mode. To work around this problem, install the NVIDIA binary driver. As a result, the second monitor output works as expected under the described circumstances. (BZ#1624337)

The Files application can not burn disks in default installation

The default installation of the Files application does not include the brasero-nautilus package necessary for burning CDs or DVDs. As a consequence, the Files application allows files to be dragged and dropped into CD or DVD devices but no content is burned to the CD or DVD. As a workaround, install brasero-nautilus package by:
# yum install brasero-nautilus

The on screen keyboard feature not visible in GTK applications

After enabling the on screen keyboard feature by using the Settings - Universal Access - Typing - Screen keyboard menu, on screen keyboard is not visible to access with GIMP Toolkit (GTK) applications, such as gedit.
To work around this problem, add the below line into the /etc/environment configuration file, and restart GNOME:

32- and 64-bit fwupd packages cannot be used together when installing or upgrading the system

The /usr/lib/systemd/system/fwupd.service file in the fwupd packages is different for 32- and 64-bit architectures. Consequently, it is impossible to install both 32- and 64-bit fwupd packages or to upgrade a Red Hat Enterprise Linux 7.5 system with both 32- and 64-bit fwupd packages to Red Hat Enterprise Linux 7.6.
To work around this problem:
  • Either do not install multilibrary fwupd packages.
  • Or remove the 32-bit or the 64-bit fwupd package before upgrading from Red Hat Enterprise Linux 7.5 to Red Hat Enterprise Linux 7.6. (BZ#1623466)

Installation in and booting into graphical mode are not possible on Huawei servers

When installing RHEL 7.6 in graphical mode on Huawei servers with AMD64 and Intel 64 processors, the screen becomes blurred and the install interface is no longer visible. After finishing the installation in console mode, the operating system cannot be booted into graphical mode.
To work around this problem:
1. Add kernel command line parameter inst.xdriver=fbdev when installing the system, and install the system as server with GUI. 2. After the installation completes, reboot and add kernel command line single to make the system boot into maintenance mode. 3. Run the following commands:
rpm -e  xorg-x11-drivers
rpm -e xorg-x11-drv-vesa
init 5
(BZ#1624847) server crashes during fast user switching

The X.Org X11 qxl video driver does not emulate the leaving virtual terminal event on shutdown. Consequently, the X.Org display server terminates unexpectedly during fast user switching, and the current user session is terminated when switching a user. (BZ#1640918) X11 crashes on Lenovo T580

Due to a bug in the libpciaccess library, the X11 server terminates unexpectedly on Lenovo T580 laptops. (BZ#1641044)

Soft lock-ups might occur during boot in the kernel with i915

On a rare occasion when a GM45 system has an improper firmware configuration, an incorrect DisplayPort hot-plug signal can cause the i915 driver to be overloaded on boot. Consequently, certain GM45 systems might experience very slow boot times while the video driver attempts to work around the problem. In some cases, the kernel might report soft lock-ups occurring. Customers are advised to contact their hardware vendors and request a firmware update to address this problem. (BZ#1608704)

System boots to a blank screen when Xinerama is enabled

When the Xinerama extension is enabled in /etc/X11/xorg.conf on a system using the nvidia/nouveau driver, the RANDR X extension gets disabled. Consequently, login screen fails to start upon boot due to the RANDR X extension being disabled. To work around this problem, do not enable Xinerama in /etc/X11/xorg.conf. (BZ#1579257)