Public bug reported: I have encountered the problem described below, after some recent updates in my Kubuntu. After asking on "Answers" I was requested to open a bug, so I'm doing it.
My problem was, that kwin stopped to show graphical effects. I'm using a laptop with Intel graphics - HD5500 After some log file search I've found, that probably the cause is shown in Xorg.0.log: Xorg.0.log:[ 7073.803] (II) AIGLX: Screen 0 is not DRI2 capable Xorg.0.log:[ 7073.803] (EE) AIGLX: reverting to software rendering After some googling, I have found article below, explaining possible root cause. I have used a solution proposed there, and after installing libegl-mesa0_18.0.0~rc4-1_amd64.deb and libgbm1_18.0.0~rc4-1_amd64.deb my problem disappeared. Link below describes details: https://bugs.freedesktop.org/show_bug.cgi?id=104928 Here is some output from my OS diag tools: lshw -C display *-display description: VGA compatible controller product: HD Graphics 5500 vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:47 memory:c0000000-c0ffffff memory:b0000000-bfffffff ioport:4000(size=64) memory:c0000-dffff lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu Bionic Beaver (development branch) Release: 18.04 Codename: bionic uname -a Linux hostname 4.15.0-10-generic #11-Ubuntu SMP Tue Feb 13 18:23:35 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux sudo dmidecode -t 1 # dmidecode 3.1 Getting SMBIOS data from sysfs. SMBIOS 2.7 present. Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: FUJITSU Product Name: LIFEBOOK A555 Version: Serial Number: YM3M035369 UUID: CF0F380B-2089-E511-8681-742B62ED267C Wake-up Type: Power Switch SKU Number: Family: LIFEBOOK-FTS Best Regards, Marek ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752343 Title: Problem with DRI2 and GLX - bionic 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1752343/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
